Low, immune enhancing, dose mtor inhibitors and uses thereof

ABSTRACT

The present invention relates, in part, to compositions and methods for enhancement of an immune response by partial mTOR inhibition, for example, with low, immune enhancing, doses of an mTOR inhibitor, such as RAD001.

This application is a continuation of U.S. Ser. No. 14/540,867, filedNov. 13, 2014 which claims priority to U.S. Ser. No. 61/903,636, filedNov. 13, 2013, U.S. Ser. No. 62/027,121, filed Jul. 21, 2014, U.S. Ser.No. 62/052,629, filed Sep. 19, 2014, and U.S. Ser. No. 62/076,142, filedNov. 6, 2014, the entire contents of each of these applications areincorporated herein by reference.

BACKGROUND

Functional and effective T-cell responses play an important role ineffective immune responses, for example, against infectious diseases andcancer. However, under certain conditions, such as chronic infection orcancer, effector T cells can be suppressed by various immunosuppressivemechanisms, including programmed death ligand-1 (PD-L1)/programmeddeath-1 (PD-1) interaction, leading to T-cell exhaustion (Pen et al.Gene Therapy 21, 262-271, 2014). It is thought that PD-L1 is normallyexpressed by most cell types, while its receptor PD-1 is only present oncertain immune cells, such as activated T cells and regulatory T (Treg)cells. It is also thought that PD-L1/PD-1 binding is important in themaintenance of peripheral T-cell tolerance, preventing auto immuneresponses. On the other hand, high levels of PD-1 expression generallycorrelate with loss of T cell function, leading to increased viral loadin cases of viral infection (Pen et al. Gene Therapy 21, 262-271, 2014).

SUMMARY OF THE INVENTION

Methods and compositions disclosed herein are based, at least in part,on the discovery that partial mTOR inhibition, e.g., with low, immuneenhancing, doses of an mTOR inhibitor, e.g., an allosteric mTORinhibitor, such as RAD001, is effective to improve immune function in asubject. While not wishing to be bound by theory, it is believed thattreatment with a low, immune enhancing, dose (e.g., a dose that isinsufficient to completely suppress the immune system but sufficient toimprove immune function) of an mTOR inhibitor is accompanied by adecrease in PD-1 positive immune effector cells, e.g., T cells, anincrease in PD-1 negative immune effector cells, e.g., T cells, or anincrease in the ratio of in PD-1 negative immune effector cells, e.g., Tcells/PD-1 positive immune effector cells, e.g., T cells. PD-1 positiveT cells, but not PD-1 negative T cells, can be exhausted by engagementwith cells which express a PD-1 ligand, e.g., PD-L1 or PD-L2. Thus,embodiments of the invention are based, at least in part, on therecognition that partial mTOR inhibition, e.g., with low, immuneenhancing, dose of an mTOR inhibitor, is associated with a reduction inthe percentage of programmed death (PD)-1 positive CD4 and CD8 Tlymphocytes.

Accordingly, in one aspect, the present invention relates to a method ofpromoting an immune response in a subject, e.g., a human subject,comprising,

administering to the subject a low, immune enhancing, dose of an mTORinhibitor, e.g., RAD001 or rapamycin,

thereby enhancing or promoting an immune response in the subject.

In an embodiment, a low, immune enhancing, dose of an mTOR inhibitor,e.g., RAD001 or rapamycin and an antigen are administered as a vaccine.

In an embodiment, a low, immune enhancing, dose of an mTOR inhibitor,e.g., RAD001 or rapamycin is administered as an adjuvant composition orcompound.

Exemplary mTOR inhibitors are described herein, e.g., in the sectionbelow entitled “MTOR INHIBITORS.”

In an embodiment, the mTOR inhibitor is an allosteric mTOR inhibitor. Inan embodiment, the mTOR inhibitor is a RAD001. In an embodiment, themTOR inhibitor is rapamycin.

In an embodiment, the mTOR inhibitor is a catalytic inhibitor, e.g., akinase inhibitor. In an embodiment, the kinase inhibitor is selectivefor mTOR. In an embodiment, the kinase inhibitor is selected from BEZ235and CCG168.

In an embodiment, the low, immune enhancing, dose comprises a pluralityof mTOR inhibitors. In an embodiment, the low, immune enhancing, dosecomprises an allosteric and a catalytic mTOR inhibitor.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris administered for an amount of time sufficient for one or more of thefollowing to occur:

-   -   i) a decrease in the number of PD-1 positive immune effector        cells;    -   ii) an increase in the number of PD-1 negative immune effector        cells;    -   iii) an increase in the ratio of PD-1 negative immune effector        cells/PD-1 positive immune effector cells;    -   iv) an increase in the number of naive T cells;    -   v) an increase in the expression of one or more of the following        markers: CD62L^(high), CD127^(high), CD27⁺, and BCL2, e.g., on        memory T cells, e.g., memory T cell precursors;    -   vi) a decrease in the expression of KLRG1, e.g., on memory T        cells, e.g., memory T cell precursors; or    -   vii) an increase in the number of memory T cell precursors,        e.g., cells with any one or combination of the following        characteristics: increased CD62L^(high), increased CD127^(high),        increased CD27⁺, decreased KLRG1, and increased BCL2;        and wherein i), ii), iii), iv), v), vi), or vii) occurs e.g., at        least transiently, e.g., as compared to a non-treated subject.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises inhibiting anegative immune response mediated by the engagement of PD-1 with PD-L1or PD-L2.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of proliferation.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of cytotoxic function, secreting cytokines, oractivation.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of providing T cell help to B cells.

In an embodiment, the administering of the low, immune enhancing, doseof an mTOR inhibitor results in the partial, but not total, inhibitionof mTOR for at least 1, 5, 10, 20, 30, or 60 days.

In an embodiment, the administering of the low, immune enhancing, doseof an mTOR inhibitor results in the partial, but not total, inhibitionof mTOR as long as enhancement of the immune response is needed.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 5% but no more than 90%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001. (Methods for evaluation of the level ofinhibition of mTOR are described herein, e.g., in the section belowentitled “EVALUATION OF MTOR INHIBITION.”)

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 10% but no more than 80%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 10% but no more than 40%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in an immediate release dosage form, 0.1 to 20, 0.5 to 10, 2.5 to7.5, 3 to 6, or about 5, mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in animmediate release dosage form, about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in an immediate release dosage form, an amount of an mTORinhibitor other than RAD001, that is bioequivalent to a one per week,immediate release dosage form of 0.1 to 20, 0.5 to 10, 2.5 to 7.5, 3 to6, or about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in animmediate release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per week, immediate releasedosage form of about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, 0.3 to 60, 1.5 to 30, 7.5 to22.5, 9 to 18, or about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in asustained release dosage form, about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per week, sustainedrelease dosage form of 0.3 to 60, 1.5 to 30, 7.5 to 22.5, 9 to 18, orabout 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in asustained release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per week sustained releasedosage form of about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in an immediate release dosage form, 0.005 to 1.5, 0.01 to 1.5,0.1 to 1.5, 0.2 to 1.5, 0.3 to 1.5, 0.4 to 1.5, 0.5 to 1.5, 0.6 to 1.5,0.7 to 1.5, 0.8 to 1.5, 1.0 to 1.5, 0.3 to 0.6, or about 0.5 mgs ofRAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering once per day, in animmediate release dosage form, about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in an immediate release dosage form, an amount of an mTORinhibitor other than RAD001, that is bioequivalent to a once per day,immediate release dosage form of 0.005 to 1.5, 0.01 to 1.5, 0.1 to 1.5,0.2 to 1.5, 0.3 to 1.5, 0.4 to 1.5, 0.5 to 1.5, 0.6 to 1.5, 0.7 to 1.5,0.8 to 1.5, 1.0 to 1.5, 0.3 to 0.6, or about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per day, in animmediate release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per day, immediate releasedosage form of about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in a sustained release dosage form, 0.015 to 4.5, 0.03 to 4.5, 0.3to 4.5, 0.6 to 4.5, 0.9 to 4.5, 1.2 to 4.5, 1.5 to 4.5, 1.8 to 4.5, 2.1to 4.5, 2.4 to 4.5, 3.0 to 4.5, 0.9 to 1.8, or about 1.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per day, sustainedrelease dosage form of 0.015 to 4.5, 0.03 to 4.5, 0.3 to 4.5, 0.6 to4.5, 0.9 to 4.5, 1.2 to 4.5, 1.5 to 4.5, 1.8 to 4.5, 2.1 to 4.5, 2.4 to4.5, 3.0 to 4.5, 0.9 to 1.8, or about 1.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, 0.1 to 30, 0.2 to 30, 2 to 30,4 to 30, 6 to 30, 8 to 30, 10 to 30, 1.2 to 30, 14 to 30, 16 to 30, 20to 30, 6 to 12, or about 10 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per week, sustainedrelease dosage form of 0.1 to 30, 0.2 to 30, 2 to 30, 4 to 30, 6 to 30,8 to 30, 10 to 30, 1.2 to 30, 14 to 30, 16 to 30, 20 to 30, 6 to 12, orabout 10 mgs of RAD001.

In an embodiment, the mTOR inhibitor is RAD001 and the dose provides fora trough level of RAD001 in a range of between about 0.1 and 3 ng/ml,between 0.3 or less and 3 ng/ml, or between 0.3 or less and 1 ng/ml.

In an embodiment, the mTOR inhibitor is other than RAD001 and the doseis bioequivalent to a dose of RAD001 that provides for a trough level ofRAD001 in a range of between about 0.1 and 3 ng/ml, between 0.3 or lessand 3 ng/ml, or between 0.3 or less and 1 ng/ml.

In an embodiment the subject has cancer. Exemplary cancers are describedherein, e.g., in the section below entitled “DISORDERS Cancer.” In anembodiment, the subject has cancer, but is not otherwiseimmunocompromised, e.g, is not HIV+, does not have AIDS, or is notimmunoscenescent. In an embodiment, the subject has cancer, but, exceptfor that due to any anti-cancer treatment, is not otherwiseimmunocompromised, e.g, is not HIV+, does not have AIDS, or is notimmunoscenescent.

In an embodiment, the subject has cancer and the method comprisespromoting the subject's immune response to the cancer. In an embodiment,the subject was selected on the basis of having cancer. In anembodiment, the subject was selected on the basis of being in need of,or likely to benefit from, promotion of the immune response. In anembodiment, a cell of the cancer expresses PD-L1 or PD-L2. In anembodiment, a cell in the cancer microenvironment expresses PD-L1 orPD-L2.

In an embodiment, the cancer comprises a solid tumor. In an embodiment,the cancer is a hematological cancer. In an embodiment, the cancer is aleukemia. In an embodiment, the cancer is melanoma.

In an embodiment, promoting an immune response in a subject comprisespreparing the subject, e.g., a subject having cancer, for an additionaltreatment that suppresses the immune system or kills T cells, e.g.,administration of a drug, e.g., a chemotherapeutic, or radiation. In anembodiment, the low, immune enhancing dose, of an mTOR inhibitor, e.g.,RAD001, reduces immune suppression associated with the additionaltreatment.

In an embodiment, the method further comprises administering anadditional treatment, e.g., a chemotherapeutic, radiation, a cellulartherapy, bone marrow transplant to the subject. Inan embodiment theadditional treatment comprises a combination of drugs or treatments asdescribed herein, see, e.g., the section below entitled “COMBINATIONTREATMENTS.” In an embodiment, the method further comprisesadministering an additional treatment that kills T cells, e.g.,radiation or cytotoxic chemotherapy. In an embodiment, the low, immuneenhancing, dose of mTOR inhibitor is administered prior to, with, orafter the initiation of the additional treatment. In an embodiment, themethod further comprises administering an additional treatment for thecancer.

In an embodiment, the method further comprises administering anadditional treatment that suppresses the immune system, e.g.,administration of a drug, e.g., a chemotherapeutic, or radiation. In anembodiment, the low, immune enhancing, dose of mTOR inhibitor, e.g.,RAD001, is administered prior to, with, or after the initiation of theadditional treatment that suppresses the immune system. While notwishing to be bound by theory, it is believed that the low, immuneenhancing dose of an mTOR inhibitor, allows for a broader range oftherapeutic options. Without wishing to be bound by theory, it isbelieved that this is due to the improvement in the subject's immuneresponsiveness. In an embodiment, the low, immune enhancing dose of anmTOR inhibitor, can allow for more aggressive administration of theadditional treatment. Thus, in an embodiment, the unit dosage, totaldosage, frequency of administration, or number of administrations, isincreased. In an embodiment, the increase is relative to a referenceadministration, e.g., the standard of care that is provided in theabsence of a low, immune enhancing, dose of mTOR inhibitor. In anembodiment, the increase is relative to an administration that wouldgive the maximum tolerable or acceptable levels of immune suppression,in the absence of a low, immune enhancing, dose of mTOR inhibitor. Inanother embodiment, the immune enhancing dose of an mTOR inhibitor, canallow for less aggressive administration of the additional treatment.Thus, in an embodiment, the unit dosage, total dosage, frequency ofadministration, or number of administrations, is decreased. In anembodiment, the decrease is relative to a reference administration,e.g., the standard of care that is provided in the absence of a low,immune enhancing, dose of mTOR inhibitor. In an embodiment, the decreaseis relative to an administration that would give the maximum tolerableor acceptable levels of immune suppression, in the absence of a low,immune enhancing, dose of mTOR inhibitor.

In an embodiment, the subject is immunocompromised. In an embodiment,the subject is HIV+ or has AIDs.

Thus, in an embodiment, promoting an immune response in a subjectcomprises promoting the immune response of an immunocompromised subject,e.g., a subject having an immunodeficiency, e.g., a hereditary oracquired immunodeficiency, e.g., a virally-mediated immunodeficiency,e.g., a subject that is HIV+, or a subject having AIDS. In anembodiment, the method further comprises administering an additionaltreatment for the immunodeficiency, e.g., an antiviral agent. In anembodiment, the subject is HIV+ or has AIDS and the additional treatmentcomprises administering an anti-viral agent, e.g., a nucleoside reversetranscriptase inhibitor, e.g., abacavir, didanosine, emtricitabine,lamivudine, stavudine, tenofovir, zalcitabine, or zidovudine, orcombinations thereof, e.g. combivir (zidovudine and lamivudine),trizivir (zidovudine, lamivudine and abacavir), epzicom (abacavir andlamivudine) and truvada (tenofovir and lamivudine). In an embodiment,the additional treatment comprises administering a protease inhibitor,e.g., amprenavir, agenerase, atazanavir, fosamprenavir, indinavir,lopinavir, ritonavir, or saquinavir, or a combination thereof. In anembodiment, the low, immune enhancing, dose of mTOR inhibitor, e.g.,RAD001, is administered prior to, with, or after the initiation of theadditional treatment. While not wishing to be bound by theory, it isbelieved that the low, immune enhancing dose of an mTOR inhibitor,allows for a broader range of therapeutic options. Without wishing to bebound by theory, it is believed that this is due to the improvement inthe subject's immune responsiveness. In an embodiment, the low, immuneenhancing dose of an mTOR inhibitor, can allow for more aggressiveadministration of the additional treatment. Thus, in an embodiment, theunit dosage, total dosage, frequency of administration, or number ofadministrations, is increased. In an embodiment, the increase isrelative to a reference administration, e.g., the standard of care thatis provided in the absence of a low, immune enhancing, dose of mTORinhibitor. In an embodiment, the increase is relative to anadministration that would give the maximum tolerable or acceptablelevels of a side effect, in the absence of a low, immune enhancing, doseof mTOR inhibitor. In another embodiment, the immune enhancing dose ofan mTOR inhibitor, can allow for less aggressive administration of theadditional treatment. Thus, in an embodiment, the unit dosage, totaldosage, frequency of administration, or number of administrations, isdecreased. In an embodiment, the decrease is relative to a referenceadministration, e.g., the standard of care that is provided in theabsence of a low, immune enhancing, dose of mTOR inhibitor. In anembodiment, the decrease is relative to an administration that wouldgive the maximum tolerable or acceptable levels of a side effect, in theabsence of a low, immune enhancing, dose of mTOR inhibitor.

In an embodiment, the subject has an infectious disease, e.g.,hepatitis, e.g., hepatitis A, B or C, or other pathogenic infection.Exemplary pathogenic infections are described herein, e.g., in thesection below entitled “DISORDERS Pathogenic Infections.” In anembodiment, the subject has an infectious disease or has a pathogenicinfection, but is not otherwise immunocompromised, e.g, is notimmunosenescent.

In an embodiment, the subject has an impaired immune response. In anembodiment, the subject is immunosenescent.

In an embodiment, the subject has an age related condition. In anembodiment, the age related condition is selected from the groupconsisting of sarcopenia, skin atrophy, muscle wasting, brain atrophy,atherosclerosis, arteriosclerosis, pulmonary emphysema, osteoporosis,osteoarthritis, high blood pressure, erectile dysfunction, dementia,Huntington's disease, Alzheimer's disease, cataracts, age-relatedmacular degeneration, prostate cancer, stroke, diminished lifeexpectancy, impaired kidney function, and age-related hearing loss,aging-related mobility disability (e.g., frailty), cognitive decline,age-related dementia, memory impairment, tendon stiffness, heartdysfunction such as cardiac hypertrophy andsystolic and diastolicdysfunction, immunosenescence, cancer, obesity, and diabetes.

In an embodiment, the method comprises enhancing an immune response toan antigen in the subject. In an embodiment the method comprisesproviding or administering to the subject a low, immune enhancing, doseof an mTOR inhibitor, e.g., RAD001 or rapamycin as an adjuvantcomposition or compound. In an embodiment the method comprises providingor administering to the subject a low, immune enhancing, dose of an mTORinhibitor, e.g., RAD001 or rapamycin, and the antigen, as a, or incombination with a vaccine. In an embodiment the antigen is a cancerantigen. In an embodiment the antigen is an infectious disease-, viral,bacterial, protozoan, microbial, pathogen-, or parasite-, antigen. In anembodiment, the method further comprises administering an antigen or avaccine to the subject. In an embodiment, prior to the step ofadministering, the method comprises a step of identifying a subjecthaving an impaired immune response to an antigen.

In an embodiment, a relatively low baseline or pre-immunization level ortiter of antibody to the antigen is predictive of a greater mTORinhibitor-, e.g., RAD001-, associated increase in antibody titer for anantigen. In an embodiment, the subject is evaluated for level or titerof antibody to the antigen prior to administration of an antigen orvaccine. In an embodiment evaluation comprises acquiring, e.g., directlyor indirectly acquiring, a measurement of titer or level of antibody.The titer or level of antibody can be compared with a reference value.Relatively low titer, e.g., titer below or equal to a reference value,is indicative of a greater mTOR inhibitor-, e.g., RAD001-, associatedincrease in antibody titer. Thus, baseline or pre-immunization titer canbe used to select patients for low, immune enhancing, dose of mTORinhibitor, e.g., in combination with vaccination or administration ofantigen to stimulate an immune response. In an embodiment, responsive toa determined level or titer of antibody, a subject is classified as tothe likelihood of benefiting from administration of a low, immuneenhancing, dose of mTOR inhibitor, e.g., prior to or with administrationof a vaccine or antigen. In an embodiment, responsive to a determinedlevel or titer of antibody, e.g., a level or titer that is at or below areference value, a subject is selected for, or administered, a low,immune enhancing, dose of mTOR inhibitor, prior to or withadministration of a vaccine or antigen. In an embodiment, responsive toa determined level or titer of antibody, e.g., a level or titer that isabove a reference value, a subject is selected for, or administered analternative therapy, e.g., administration of a vaccine or antigen,without the administration of a low, immune enhancing, dose of mTORinhibitor.

In an embodiment, the subject is infected with, or at risk for infectionwith, an influenza virus, e.g., an influenza A or B virus.

In an embodiment, the method comprises enhancing an immune response toan influenza virus, e.g., an influenza A or B virus. Influenza A virusesare characterized by one or both of two glycoproteins, a hemagglutinin(HA) polypeptide and a neuraminidase (NA) polypeptide, which aredisplayed on the surface of the virus. There are 17 HA antigens, denotedH1-17, and nine different NA antigens, denoted N1-9.

In such embodiments the antigen or vaccine comprises an influenzaantigen, e.g., an influenza A or B antigen. In an embodiment the antigencomprises an HA antigen, e.g., any of H1-17. In an embodiment theantigen is selected from H1N1, H2N2, H3N2, H5N1, H7N7, H1N2, H9N2,H7N2H7N3, H10N7, or H7N9.

In an embodiment, the antigen is selected from H1N1, H2N3, and Binfluenza subtypes. In an embodiment, the antigen is a pneumococcalantigen.

In an embodiment, the antigen and the mTOR inhibitor areco-administered. In an embodiment, the antigen and the mTOR inhibitorare administered sequentially. In an embodiment, the subject is lessthan 65 years old.

In an embodiment, a relatively low baseline or pre-immunization level ortiter of influenza antibody is predictive of a greater mTOR inhibitor-,e.g., RAD001-, associated increase in antibody titer for the influenzavirus, e.g., an influenza A virus. In an embodiment, the subject isevaluated for anti-influenza antibody titer prior to administration ofan antigen or vaccine. In an embodiment, evaluation comprises acquiring,e.g., directly or indirectly acquiring, a measurement of anti-influenzaantibody titer. The titer of antibody can be compared with a referencevalue. Relatively low titer, e.g., titer at or below a reference value,e.g., less than or equal to a titer of 1:40 (e.g., as measured herein),is indicative of a greater mTOR inhibitor-, e.g., RAD001-, associatedincrease in antibody titer. Thus, baseline or pre-immunization titer canbe used to select patients for low, immune enhancing, dose of mTORinhibitor, e.g., in combination with vaccination or administration ofantigen to protect against influenza, e.g., influenza A. In anembodiment, responsive to a determined antibody titer, a subject isclassified as to the likelihood of benefiting from administration of alow, immune enhancing, dose of mTOR inhibitor, e.g., prior to or withadministration of a vaccine or antigen. In an embodiment, responsive toa determined antibody titer, e.g., a titer that is at or below areference value, a subject is selected for, or administered, a low,immune enhancing, dose of mTOR inhibitor, prior to or withadministration of a vaccine or antigen. In an embodiment, responsive toa determined antibody titer, e.g., a titer that is above a referencevalue, a subject is selected for, or administered an alternativetherapy, e.g., administration of a vaccine or antigen without theadministration of a low, immune enhancing, dose of mTOR inhibitor.

In an embodiment, the subject does not receive a vaccine, e.g., does notreceive a vaccine while the mTOR inhibitor is present at levels whichpromote the immune response. In an embodiment, the vaccine is ananti-cancer vaccine or a vaccine against an infectious agent. In anembodiment the vaccine is a therapeutic vaccine for a neurologicaldisorder, e.g., Alzheimers.

In an embodiment, the subject does not receive a vaccine, e.g., a cancervaccine, within 10, 20, 30, 40, 50, 60, 70, 80, or 90 days prior toinitiation of the low, immune enhancing, dose of the mTOR inhibitor.

In an embodiment, the subject does not receive a vaccine, e.g., a cancervaccine, within 10, 20, 30, 40, 50, 60, 70, 80, or 90 days afterinitiation of the low, immune enhancing, dose of the mTOR inhibitor.

In an embodiment, the low, immune enhancing, dose of a mTOR inhibitor isadministered at the time of, or after vaccination. In an embodiment, thelow, immune enhancing, dose of a mTOR inhibitor is administered within24, 10, 5, 4, 3, 2, or 1 hour, prior to, at the time of, or after thevaccination.

In another aspect, the invention features, a method of evaluating asubject for treatment with a low, immune enhancing, dose of mTORinhibitor, e.g., to promote or enhance an immune response to aninfluenza vaccine or antigen, comprising:

determining if the baseline or pre-immunization titer of anti-influenzaantibody of the subject is equal to or less than 1:40; and

responsive to the determination, classifying the subject, e.g., as tothe likelihood of benefiting from a low, immune enhancing, dose ofRAD001, or selecting a course of therapy for said subject.

In an embodiment, determining comprises directly acquiring the antibodytiter.

In an embodiment, determining comprises indirectly acquiring theantibody titer.

In an embodiment, the antibody titer is equal to or less than 1:40 andthe subject is classified as likely to benefit from a low, immuneenhancing, dose of RAD001.

In an embodiment the antibody titer is equal to or less than 1:40 andthe subject is administered a low, immune enhancing, dose of RAD001.

In an embodiment the subject is administered an influenza vaccine orantigen.

In an embodiment the antibody titer is greater than 1:40 and the subjectis classified as not likely to benefit from a low, immune enhancing,dose of RAD001.

In another aspect, the invention features a vaccine or vaccinecomposition comprising a low, immune enhancing, dose of an mTORinhibitor described herein, e.g., RAD001 or rapamycin, and an antigen.

In an embodiment, the vaccine or vaccine composition comprises a vaccineantigen, and about 0.005 mg to 1.5 mg of the mTOR inhibitor RAD001, or abioequivalent dose of a different mTOR inhibitor.

In an embodiment, the vaccine or vaccine composition comprises about0.01-1 mg, about 0.01-0.7 mg, about 0.01-0.5 mg, or about 0.1-0.5 mg ofRAD001, or a bioequivalent dose of a different mTOR inhibitor.

In an embodiment, the composition comprises about 0.5 mg of RAD001 or abioequivalent dose of a different mTOR inhibitor.

In an embodiment, the composition comprises an amount of an mTORinhibitor sufficient to inhibit P70 S6 kinase activity by no greaterthan 80% in a subject to which said composition is administered.

In an embodiment, the composition comprises an amount of an mTORinhibitor sufficient to inhibit P70 S6 kinase activity by no greaterthan 38% in a subject to which said composition is administered.

In an embodiment, the composition produces at least a 1.2 fold increasein immune response as compared to placebo in a subject to which saidcomposition is administered.

In an embodiment, the mTOR inhibitor is a rapamycin.

In an embodiment, the mTOR inhibitor is a rapalog.

In an embodiment, the vaccine antigen is derived from influenza.

In an embodiment, the vaccine antigen is selected from the groupconsisting of H1N1, H2N3, and B influenza subtypes.

In an embodiment, the vaccine antigen is derived from pneumococcus.

In another aspect, the invention features, an adjuvant, or adjuvantcomposition or compound, comprising a low, immune enhancing, dose of anmTOR inhibitor described herein, e.g., RAD001 or rapamycin.

In an embodiment, a vaccine adjuvant comprises about 0.005 mg to 1.5 mgof the mTOR inhibitor RAD001, or a bioequivalent dose of a differentmTOR inhibitor.

In an embodiment, a vaccine adjuvant comprises an amount of an mTORinhibitor sufficient to inhibit P70 S6 kinase activity in a cell by nogreater than 80%. In another embodiment, a vaccine adjuvant comprises anamount of an mTOR inhibitor sufficient to inhibit P70 S6 kinase activityin a cell by no greater than 38%.

In an embodiment, the vaccine adjuvant comprises an mTOR inhibitor,wherein the mTOR inhibitor is a rapamycin.

In an embodiment, the vaccine adjuvant comprises an mTOR inhibitor,wherein the mTOR inhibitor is a rapalog.

In an embodiment, the vaccine adjuvant comprises about 0.01-1 mg,0.01-0.7 mg, 0.01-0.5 mg, or 0.1-0.5 mg of RAD001 or a bioequivalentdose of a different mTOR inhibitor.

In an embodiment, the vaccine adjuvant comprises about 0.5 mg of RAD001or a bioequivalent dose of a different mTOR inhibitor.

In an aspect, the invention features a method of collecting immuneeffector cells, e.g., T cells, or preparing a mammal, e.g., a primate,e.g., a human, for collection of T cells to form a preparation of immuneeffector cells, T cells, wherein the method comprises: administering tothe subject a low, immune enhancing dose, of an mTOR inhibitor, e.g.,RAD001, or rapamycin, for an amount of time sufficient to decrease theproportion of PD-1 positive immune effector cells, e.g., T cells orincrease the proportion of PD-1 negative immune effector cells, e.g., Tcells, in the mammal or in a preparation of immune effector cells, e.g.,T cells, collected from the mammal.

In an embodiment the method comprises collecting the immune effectorcells, e.g., T cells. In an embodiment the method comprises forming animmune effector cell preparation, e.g., a T cell preparation.

In an embodiment, the immune effector cells are T cells. In anembodiment, the T cells are CD4-expressing (CD4+ or CD4) T cells. In anembodiment, the T cells are CD8-expressing (CD8+ or CD8) T cells. In anembodiment, the T cells comprise a plurality of CD4+ T cells and CD8+ Tcells.

In an embodiment, the method of collecting immune effector cells furthercomprises evaluating the level of PD1 negative or PD1 positive immuneeffector cells, e.g., T cells, in the subject or in T cells taken fromthe subject.

In an embodiment, the method of collecting immune effector cells furthercomprises collecting T cells to form the preparation of T cells.

In an embodiment, the method of collecting immune effector cells furthercomprises providing a preparation of T cells.

In an embodiment, the administering to the subject a low, immuneenhancing dose, of an mTOR inhibitor is initiated at least 1, 2, 3, 4,5, 10, 15, 20, 25, or 30 days prior to collection of T cells.

In an embodiment, the administering to the subject a low, immuneenhancing dose, of an mTOR inhibitor is initiated at least 30, 60, 90 or120 days prior to collection of T cells.

In an embodiment, collection of the T cells is performed within 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 20, 30, 60, or 90, days after the lastadministration of a low, immune enhancing dose, of an mTOR inhibitor.

In an embodiment, the administering to the subject a low, immuneenhancing dose, of an mTOR inhibitor results in the partial, but nottotal, inhibition of mTOR for at least at least 1, 2, 3, 4, 5, 10, 15,20, 25, or 30 days prior to collection of T cells to form a preparationof T cells from the mammal.

In an embodiment, collection of the T cells is performed within 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 20, 30, 60, or 90, days after a determination hasbeen made that there is partial inhibition of mTOR in the subject.

In an embodiment, collection of the T cells is performed within 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 20, 30, 60, or 90, days after onset of partialmTOR inhibition in the subject.

In an embodiment, the preparation of T cells comprises a PD-1 negative Tcell.

In an embodiment, at least 80-90% of the T cells collected are PD-1negative.

In an embodiment, no more than 10-20% of the T cells collected are PD-1positive.

In an embodiment, the mTOR inhibitor is an allosteric mTOR inhibitor. Inan embodiment, the mTOR inhibitor is a RAD001. In an embodiment, themTOR inhibitor is rapamycin.

In an embodiment, the mTOR inhibitor is a catalytic inhibitor, e.g., akinase inhibitor. In an embodiment, the kinase inhibitor is selectivefor mTOR. In an embodiment, the kinase inhibitor is selected from BEZ235and CCG168.

In an embodiment, the low, immune enhancing, dose comprises a pluralityof mTOR inhibitors. In an embodiment, the dose comprises an allostericand a catalytic mTOR inhibitor.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris administered for an amount of time sufficient for one or more of thefollowing to occur:

-   -   i) a decrease in the number of PD-1 positive immune effector        cells;    -   ii) an increase in the number of PD-1 negative immune effector        cells;    -   iii) an increase in the ratio of PD-1 negative immune effector        cells/PD-1 positive immune effector cells;    -   iv) an increase in the number of naive T cells;    -   v) an increase in the expression of one or more of the following        markers: CD62L^(high), CD127^(high), CD27⁺, and BCL2, e.g., on        memory T cells, e.g., memory T cell precursors;    -   vi) a decrease in the expression of KLRG1, e.g., on memory T        cells, e.g., memory T cell precursors; or    -   vii) an increase in the number of memory T cell precursors,        e.g., cells with any one or combination of the following        characteristics: increased CD62L^(high), increased CD127^(high),        increased CD27⁺, decreased KLRG1, and increased BCL2;

-   and wherein i), ii), iii), iv), v), vi), or vii) occurs e.g., at    least transiently, e.g., as compared to a non-treated subject.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises inhibiting anegative immune response mediated by the engagement of PD-1 with PD-L1or PD-L2.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of proliferation.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of cytotoxic function, secreting cytokines, oractivation.

In an embodiment, the method of treating, e.g., promoting an immuneresponse in, a subject, e.g., a human subject, comprises increasing thenumber of T cells capable of providing T cell help to B cells.

In an embodiment, the administering of the low, immune enhancing, doseof an mTOR inhibitor results in the partial, but not total, inhibitionof mTOR for at least 1, 5, 10, 20, 30, or 60 days.

In an embodiment, the administering of the low, immune enhancing, doseof an mTOR inhibitor results in the partial, but not total, inhibitionof mTOR as long as enhancement of the immune response is needed.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 5 but no more than 90%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 10% but no more than 80%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris associated with mTOR inhibition of at least 10% but no more than 40%,e.g., as measured by p70 S6K inhibition. In an embodiment, the mTORinhibitor comprises RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in an immediate release dosage form, 0.1 to 20, 0.5 to 10, 2.5 to7.5, 3 to 6, or about 5, mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in animmediate release dosage form, about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in an immediate release dosage form, an amount of an mTORinhibitor other than RAD001, that is bioequivalent to a one per week,immediate release dosage form of 0.1 to 20, 0.5 to 10, 2.5 to 7.5, 3 to6, or about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in animmediate release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per week, immediate releasedosage form of about 5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, 0.3 to 60, 1.5 to 30, 7.5 to22.5, 9 to 18, or about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in asustained release dosage form, about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per week, sustainedrelease dosage form of 0.3 to 60, 1.5 to 30, 7.5 to 22.5, 9 to 18, orabout 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per week, in asustained release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per week sustained releasedosage form of about 15 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in an immediate release dosage form, 0.005 to 1.5, 0.01 to 1.5,0.1 to 1.5, 0.2 to 1.5, 0.3 to 1.5, 0.4 to 1.5, 0.5 to 1.5, 0.6 to 1.5,0.7 to 1.5, 0.8 to 1.5, 1.0 to 1.5, 0.3 to 0.6, or about 0.5 mgs ofRAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering once per day, in animmediate release dosage form, about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in an immediate release dosage form, an amount of an mTORinhibitor other than RAD001, that is bioequivalent to a once per day,immediate release dosage form of 0.005 to 1.5, 0.01 to 1.5, 0.1 to 1.5,0.2 to 1.5, 0.3 to 1.5, 0.4 to 1.5, 0.5 to 1.5, 0.6 to 1.5, 0.7 to 1.5,0.8 to 1.5, 1.0 to 1.5, 0.3 to 0.6, or about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, once per day, in animmediate release dosage form, an amount of an mTOR inhibitor other thanRAD001, that is bioequivalent to a once per day, immediate releasedosage form of about 0.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in a sustained release dosage form, 0.015 to 4.5, 0.03 to 4.5, 0.3to 4.5, 0.6 to 4.5, 0.9 to 4.5, 1.2 to 4.5, 1.5 to 4.5, 1.8 to 4.5, 2.1to 4.5, 2.4 to 4.5, 3.0 to 4.5, 0.9 to 1.8, or about 1.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per day,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per day, sustainedrelease dosage form of 0.015 to 4.5, 0.03 to 4.5, 0.3 to 4.5, 0.6 to4.5, 0.9 to 4.5, 1.2 to 4.5, 1.5 to 4.5, 1.8 to 4.5, 2.1 to 4.5, 2.4 to4.5, 3.0 to 4.5, 0.9 to 1.8, or about 1.5 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, 0.1 to 30, 0.2 to 30, 2 to 30,4 to 30, 6 to 30, 8 to 30, 10 to 30, 1.2 to 30, 14 to 30, 16 to 30, 20to 30, 6 to 12, or about 10 mgs of RAD001.

In an embodiment, administering to the subject a low, immune enhancing,dose of an mTOR inhibitor comprises administering, e.g., once per week,e.g., in a sustained release dosage form, an amount of an mTOR inhibitorother than RAD001, that is bioequivalent to a once per week, sustainedrelease dosage form of 0.1 to 30, 0.2 to 30, 2 to 30, 4 to 30, 6 to 30,8 to 30, 10 to 30, 1.2 to 30, 14 to 30, 16 to 30, 20 to 30, 6 to 12, orabout 10 mgs of RAD001.

In an embodiment, the mTOR inhibitor is RAD001 and the dose provides fora trough level of RAD001 in a range of between about between 0.3 or lessand 3 ng/ml, or between 0.3 or less and 1 ng/ml.

In an embodiment, the mTOR inhibitor is other than RAD001 and the doseis bioequivalent to a dose of RAD001 that provides for a trough level ofRAD001 in a range of between about between 0.3 or less and 3 ng/ml, orbetween 0.3 or less and 1 ng/ml.

In an embodiment, the subject has cancer and the method comprisespromoting the subject's immune response to the cancer. In an embodiment,the subject was selected on the basis of having cancer. In anembodiment, a cell of the cancer expresses PD-L1 or PD-L2. In anembodiment, a cell in the cancer microenvironment expresses PD-L1 orPD-L2.

In an embodiment, the cancer comprises a solid tumor. In an embodiment,the cancer is a hematological cancer. In an embodiment, the cancer is aleukemia. In an embodiment, the cancer is melanoma. In an embodiment,the cancer is selected from Table 1.

In an embodiment, the subject is immunocompromised. In an embodiment,the subject is HIV+ or has AIDs. In an embodiment, the subject has aninfectious disease.

In an embodiment, the subject has an infectious disease, e.g.,hepatitis, e.g., hepatitis A, B or C. In an embodiment, the subject hasan infectious disease, but is not otherwise immunocompromised, e.g, isnot immunosenescent.

In an embodiment, the subject has an impaired immune response. In anembodiment, the subject is immunoscenescent.

In an embodiment, the subject is infected with a virus, bacteria,protozoan, microbe, pathogen, or parasite.

In an embodiment, the subject has an age related condition.

In an embodiment, the subject is less than 65 years old.

In an embodiment, the subject does not receive a vaccine, e.g., does notreceive a vaccine while the mTOR inhibitor is present at levels whichpromote the immune response. In an embodiment, the vaccine is ananti-cancer vaccine or a vaccine against an infectious agent. In anembodiment the vaccine is a therapeutic vaccine for a neurologicaldisorder, e.g., Alzheimers disease.

In an embodiment, the subject does not receive a vaccine, e.g., a cancervaccine, within 10, 20, 30, 40, 50, 60, 70, 80, or 90 days prior toinitiation of the low, immune enhancing, dose of the mTOR inhibitor.

In an embodiment, the subject does not receive a vaccine, e.g., a cancervaccine, within 10, 20, 30, 40, 50, 60, 70, 80, or 90 days afterinitiation of the low, immune enhancing, dose of the mTOR inhibitor.

In an embodiment, the low, immune enhancing, dose of an mTOR inhibitoris administered at the time of, or after vaccination.

In an aspect, a preparation of human T cells, e.g., as made by a methoddescribed herein, enriched for PD-1 negative T cells is provided herein.In an embodiment, the subject has cancer or is immunocompromised.

In another aspect, the invention features, a preparation of T cells,e.g., human T cells, achievable by, or which could be made by, practiceof a method described herein.

In another aspect, the invention features a unit dosage form,composition, or formulation, of an mTOR inhibitor, e.g., RAD001, e.g., adosage form suitable for oral administration. Embodiments are describedherein, e.g., in the section below entitled “LOW-DOSE MTOR INHIBITORS”.Unit dosage forms or compositions can be provided as immediate orsustained release formulations, se, e.g., the sections below entitled“PHARMACEUTICAL COMPOSITIONS” and “SUSTAINED RELEASE.”

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A and 1B are graphs showing an increase in titers to influenzavaccine strains as compared to placebo. In FIG. 1A, the increase abovebaseline in influenza geometric mean titers to each of the 3 influenzavaccine strains (H1N1 A/California/07/2009, H3N2 A/Victoria/210/2009,B/Brisbane/60/2008) relative to the increase in the placebo cohort 4weeks after vaccination is shown for each of the RAD001 dosing cohortsin the intention to treat population. The bold black line indicates the1.2 fold increase in titers relative to placebo that is required to bemet for 2 out of 3 influenza vaccine strains to meet the primaryendpoint of the study. The star “*” indicates that the increase in GMTtiter relative to placebo exceeds 1 with posterior probability of atleast 80%. FIG. 1B is a graph of the same data as in FIG. 1A for thesubset of subjects with baseline influenza titers <=1:40.

FIG. 2 shows a scatter plot of RAD001 concentration versus fold increasein geometric mean titer to each influenza vaccine strain 4 weeks aftervaccination. RAD001 concentrations (1 hour post dose) were measuredafter subjects had been dosed for 4 weeks. All subjects who hadpharmacokinetic measurements were included in the analysis set. The foldincrease in geometric mean titers at 4 weeks post vaccination relativeto baseline is shown on the y axis.

FIG. 3 is a graphic representation showing increase in titers toheterologous influenza strains as compared to placebo. The increaseabove baseline in influenza geometric mean titers to 2 heterologousinfluenza strains (A/H1N1 strain A/New Jersey/8/76 and A/H3N2 strainA/Victoria/361/11) not contained in the influenza vaccine relative tothe increase in the placebo cohort 4 weeks after vaccination is shownfor each of the RAD001 dosing cohorts in the intention to treatpopulation. * indicates increase in titer relative to placebo exceeds 1with a posterior probability of at least 80%.

FIGS. 4A and 4B are graphic representations of IgG and IgM levels beforeand after influenza vaccination. Levels ofanti-A/H1N1/California/07/2009 influenza IgG and IgM were measured inserum obtained from subjects before and 4 weeks post influenzavaccination. No significant difference in the change from baseline to 4weeks post vaccination in anti-H1N1 influenza IgG and IgM levels weredetected between the RAD001 and placebo cohorts (all p values >0.05 byKruskal-Wallis rank sum test).

FIGS. 5A, 5B, and 5C are graphic representations of the decrease inpercent of PD-1-positive CD4 and CD8 and increase in PD-1-negative CD4 Tcells after RAD001 treatment. The percent of PD-1-positive CD4, CD8 andPD-1-negative CD4 T cells was determined by FACS analysis of PBMCsamples at baseline, after 6 weeks of study drug treatment (Week 6) and6 weeks after study drug discontinuation and 4 weeks after influenzavaccination (Week 12). FIG. 5A shows there was a significant decrease(−37.1-−28.5%) in PD-1-positive CD4 T cells at week 12 in cohortsreceiving RAD001 at dose levels 0.5 mg/Day (n=25), 5 mg/Week (n=29) and20 mg/Week (n=30) as compared to the placebo cohort (n=25) with p=0.002(0.02), p=0.003 (q=0.03), and p=0.01 (q=0.05) respectively. FIG. 5Bshows there was a significant decrease (−43.3-−38.5%) in PD-1-positiveCD8 T cells at week 12 in cohorts receiving RAD001 (n=109) at doselevels 0.5 mg/Day (n=25), 5 mg/Week (n=29) and 20 mg/Week (n=30) ascompared to the placebo cohort (n=25) with p=0.01 (0.05), p=0.007(q=0.04), and p=0.01 (q=0.05) respectively.

FIG. 5C shows was a significant increase (3.0-4.9%) in PD-1-negative CD4T cells at week 12 in cohorts receiving RAD001 (n=109) at dose levels0.5 mg/Day (n=25), 5 mg/Week (n=29) and 20 mg/Week (n=30) as compared tothe placebo cohort (n=25) with p=0.0007 (0.02), p=0.03 (q=0.07), andp=0.03 (q=0.08) respectively.

FIGS. 6A and 6B are graphic representations of the decrease in percentof PD-1-positive CD4 and CD8 and increase in PD-1-negative CD4 T cellsafter RAD001 treatment adjusted for differences in baseline PD-1expression. The percent of PD-1-positive CD4, CD8 and PD-1-negative CD4T cells was determined by FACS analysis of PBMC samples at baseline,after 6 weeks of study drug treatment (Week 6) and 6 weeks after studydrug discontinuation and 4 weeks after influenza vaccination (Week 12).FIG. 6A shows a significant decrease of 30.2% in PD-1+CD4 T cells atweek 6 in the pooled RAD cohort (n=84) compared to placebo cohort (n=25)with p=0.03 (q=0.13). The decrease in PD-1-positive CD4 T cells at week12 in the pooled RAD as compared to the placebo cohort is 32.7% withp=0.05 (q=0.19). FIG. 6B shows a significant decrease of 37.4% inPD-1-positive CD8 T cells at week 6 in the pooled RAD001 cohort (n=84)compared to placebo cohort (n=25) with p=0.008 (q=0.07). The decrease inPD-1-positive CD8 T cells at week 12 in the pooled RAD001 as compared tothe placebo cohort is 41.4% with p=0.066 (q=0.21). FIGS. 6A and 6Brepresent the data in FIGS. 5A, 5B, and 5C but with the different RAD001dosage groups of FIGS. 5A, 5B, and 5C pooled into the singleRAD001-treated group in FIGS. 6A and 6B.

FIG. 7 depicts increases in exercise and energy in elderly subjects inresponse to RAD001.

FIGS. 8A and 8B depict the predicted effect of RAD001 on P70 S6Kactivity in cells. FIG. 8A depicts P70 S6 kinase inhibition with higherdoses of weekly and daily RAD001; FIG. 8B depicts P70 S6 kinaseinhibition with lower doses of weekly RAD001.

DETAILED DESCRIPTION

Definitions

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which the invention pertains.

The term “a” and “an” refers to one or to more than one (i.e., to atleast one) of the grammatical object of the article. By way of example,“an element” means one element or more than one element.

The term “about” when referring to a measurable value such as an amount,a temporal duration, and the like, refers to variations of ±20% or insome instances ±10%, or in some instances ±5%, or in some instances ±1%,or in some instances ±0.1% from the specified value, as such variationsare appropriate to perform the disclosed methods.

The term “adjuvant” refers to a compound that, when used in combinationwith a specific immunogen, e.g., a vaccine immunogen, in a formulation,augments or otherwise alters, modifies or enhances the resultant immuneresponses.

The term “anti-tumor effect” refers to a biological effect which can bemanifested by various means, including but not limited to, e.g., adecrease in tumor volume, a decrease in the number of tumor cells, adecrease in the number of metastases, an increase in life expectancy,decrease in tumor cell proliferation, decrease in tumor cell survival,or amelioration of various physiological symptoms associated with thecancerous condition. An “anti-tumor effect” can also be manifested bythe ability of the compounds (e.g., mTOR inhibitors), peptides,polynucleotides, cells and antibodies of the invention in prevention ofthe occurrence of tumor in the first place.

The term “antibody,” refers to a protein, or polypeptide sequencederived from an immunoglobulin molecule which specifically binds with anantigen. Antibodies can be polyclonal or monoclonal, multiple or singlechain, or intact immunoglobulins, and may be derived from naturalsources or from recombinant sources. Antibodies can be tetramers ofimmunoglobulin molecules.

The term “antibody fragment” refers to at least one portion of an intactantibody, or recombinant variants thereof, and refers to the antigenbinding domain, e.g., an antigenic determining variable region of anintact antibody, that is sufficient to confer recognition and specificbinding of the antibody fragment to a target, such as an antigen.Examples of antibody fragments include, but are not limited to, Fab,Fab′, F(ab′)2, and Fv fragments, scFv antibody fragments, linearantibodies, single domain antibodies such as sdAb (either VL or VH),camelid VHH domains, and multi-specific antibodies formed from antibodyfragments. The term “scFv” refers to a fusion protein comprising atleast one antibody fragment comprising a variable region of a lightchain and at least one antibody fragment comprising a variable region ofa heavy chain, wherein the light and heavy chain variable regions arecontiguously linked via a short flexible polypeptide linker, and capableof being expressed as a single chain polypeptide, and wherein the scFvretains the specificity of the intact antibody from which it is derived.Unless specified, as used herein an scFv may have the VL and VH variableregions in either order, e.g., with respect to the N-terminal andC-terminal ends of the polypeptide, the scFv may comprise VL-linker-VHor may comprise VH-linker-VL.

The term “antibody heavy chain,” refers to the larger of the two typesof polypeptide chains present in antibody molecules in their naturallyoccurring conformations, and which normally determines the class towhich the antibody belongs.

The term “antibody light chain,” refers to the smaller of the two typesof polypeptide chains present in antibody molecules in their naturallyoccurring conformations. Kappa (κ) and lambda (λ) light chains refer tothe two major antibody light chain isotypes.

The term “antigen” or “Ag” refers to a molecule that provokes an immuneresponse. This immune response may involve either antibody production,or the activation of specific immunologically-competent cells, or both.The skilled artisan will understand that any macromolecule, includingvirtually all proteins or peptides, can serve as an antigen.Furthermore, antigens can be derived from recombinant or genomic DNA. Askilled artisan will understand that any DNA, which comprises anucleotide sequences or a partial nucleotide sequence encoding a proteinthat elicits an immune response therefore encodes an “antigen” as thatterm is used herein. Furthermore, one skilled in the art will understandthat an antigen need not be encoded solely by a full length nucleotidesequence of a gene. It is readily apparent that the present inventionincludes, but is not limited to, the use of partial nucleotide sequencesof more than one gene and that these nucleotide sequences are arrangedin various combinations to encode polypeptides that elicit the desiredimmune response. Moreover, a skilled artisan will understand that anantigen need not be encoded by a “gene” at all. It is readily apparentthat an antigen can be generated synthesized or can be derived from abiological sample, or might be macromolecule besides a polypeptide. Sucha biological sample can include, but is not limited to a tissue sample,a tumor sample, a cell or a fluid with other biological components.

The term “antigen presenting cell” or “APC” refers to an immune systemcell such as an accessory cell (e.g., a B-cell, a dendritic cell (DC),and the like) that displays a foreign antigen complexed with majorhistocompatibility complexes (MHC's) on its surface. T-cells mayrecognize these complexes using their T-cell receptors (TCRs). APCsprocess antigens and present them to T-cells.

The term “bioequivalent” refers to an amount of an agent other than thereference compound (e.g., RAD001), required to produce an effectequivalent to the effect produced by the reference dose or referenceamount of the reference compound (e.g., RAD001). In an embodiment theeffect is the level of mTOR inhibition, e.g., as measured by P70 S6kinase inhibition, e.g., as evaluated in an in vivo or in vitro assay,e.g., as measured by an assay described herein, e.g., the Boulay assay,or measurement of phosphorylated S6 levels by western blot. In anembodiment, the effect is alteration of the ratio of PD-1 positive/PD-1negative T cells, as measured by cell sorting. In an embodiment abioequivalent amount or dose of an mTOR inhibitor is the amount or dosethat achieves the same level of P70 S6 kinase inhibition as does thereference dose or reference amount of a reference compound. In anembodiment, a bioequivalent amount or dose of an mTOR inhibitor is theamount or dose that achieves the same level of alteration in the ratioof PD-1 positive/PD-1 negative T cells as does the reference dose orreference amount of a reference compound.

The term “cancer” refers to a disease characterized by the rapid anduncontrolled growth of aberrant cells. Cancer cells can spread locallyor through the bloodstream and lymphatic system to other parts of thebody. Examples of various cancers are described herein and include butare not limited to, breast cancer, prostate cancer, ovarian cancer,cervical cancer, skin cancer, pancreatic cancer, colorectal cancer,renal cancer, liver cancer, brain cancer, lymphoma, leukemia, lungcancer and the like. In an embodiment, a cancer is characterized byexpression of a PD-1 ligand, e.g., PD-L1 or PD-L2, on a cancer cell orin a tumor microenvironment. The term “cancer” is refers to all types ofcancerous growths or oncogenic processes, metastatic tissues ormalignantly transformed cells, tissues, or organs, irrespective ofhistopathologic type or stage of invasiveness.

The terms “co-administration” or “combined administration” or the likeas utilized herein are meant to encompass administration of the selectedtherapeutic agents to a single patient, and are intended to includetreatment regimens in which the agents are not necessarily administeredby the same route of administration or at the same time. In one aspectof the methods described herein, an mTOR inhibitor and an antigen may beco-administered.

The term “effective amount” or “therapeutically effective amount” areused interchangeably herein, and refer to an amount of a compound,formulation, material, or composition, as described herein effective toachieve a particular biological result.

The term “encoding” refers to the inherent property of specificsequences of nucleotides in a polynucleotide, such as a gene, a cDNA, oran mRNA, to serve as templates for synthesis of other polymers andmacromolecules in biological processes having either a defined sequenceof nucleotides (e.g., rRNA, tRNA and mRNA) or a defined sequence ofamino acids and the biological properties resulting therefrom. Thus, agene, cDNA, or RNA, encodes a protein if transcription and translationof mRNA corresponding to that gene produces the protein in a cell orother biological system. Both the coding strand, the nucleotide sequenceof which is identical to the mRNA sequence and is usually provided insequence listings, and the non-coding strand, used as the template fortranscription of a gene or cDNA, can be referred to as encoding theprotein or other product of that gene or cDNA.

The term “endogenous” refers to any material from or produced inside anorganism, cell, tissue or system.

The term “exogenous” refers to any material introduced from or producedoutside an organism, cell, tissue or system.

The term “expression” refers to the transcription and/or translation ofa particular nucleotide sequence driven by a promoter.

The term “fully human” refers to an immunoglobulin, such as an antibodyor antibody fragment, where the whole molecule is of human origin orconsists of an amino acid sequence identical to a human form of theantibody or immunoglobulin.

The term “homologous” or “identity” refers to the subunit sequenceidentity between two polymeric molecules, e.g., between two nucleic acidmolecules, such as, two DNA molecules or two RNA molecules, or betweentwo polypeptide molecules. When a subunit position in both of the twomolecules being compared is occupied by the same monomeric subunit;e.g., if a position in each of two DNA molecules is occupied by adenine,then they are homologous or identical at that position. The homologybetween two sequences is a direct function of the number of matching orhomologous positions; e.g., if half (e.g., five positions in a polymerten subunits in length) of the positions in two sequences arehomologous, the two sequences are 50% homologous; if 90% of thepositions (e.g., 9 of 10), are matched or homologous, the two sequencesare 90% homologous.

“Humanized” forms of non-human (e.g., murine) antibodies are chimericimmunoglobulins, immunoglobulin chains or fragments thereof (such as Fv,Fab, Fab′, F(ab′)2 or other antigen-binding subsequences of antibodies)which contain minimal sequence derived from non-human immunoglobulin.For the most part, humanized antibodies and antibody fragments thereofare human immunoglobulins (recipient antibody or antibody fragment) inwhich residues from a complementary-determining region (CDR) of therecipient are replaced by residues from a CDR of a non-human species(donor antibody) such as mouse, rat or rabbit having the desiredspecificity, affinity, and capacity. In some instances, Fv frameworkregion (FR) residues of the human immunoglobulin are replaced bycorresponding non-human residues. Furthermore, a humanizedantibody/antibody fragment can comprise residues which are found neitherin the recipient antibody nor in the imported CDR or frameworksequences. These modifications can further refine and optimize antibodyor antibody fragment performance. In general, the humanized antibody orantibody fragment thereof will comprise substantially all of at leastone, and typically two, variable domains, in which all or substantiallyall of the CDR regions correspond to those of a non-human immunoglobulinand all or a significant portion of the FR regions are those of a humanimmunoglobulin sequence. The humanized antibody or antibody fragment canalso comprise at least a portion of an immunoglobulin constant region(Fc), typically that of a human immunoglobulin. For further details, seeJones et al., Nature, 321: 522-525, 1986; Reichmann et al., Nature, 332:323-329, 1988; Presta, Curr. Op. Struct. Biol., 2: 593-596, 1992.

The terms “immunosenescence or immunosenescent” refer to a decrease inimmune function resulting in impaired immune response, e.g., to cancer,vaccination, infectious pathogens, among others. It involves both thehost's capacity to respond to infections and the development oflong-term immune memory, especially by vaccination. This immunedeficiency is ubiquitous and found in both long- and short-lived speciesas a function of their age relative to life expectancy rather thanchronological time. It is considered a major contributory factor to theincreased frequency of morbidity and mortality among the elderly.Immunosenescence is not a random deteriorative phenomenon, rather itappears to inversely repeat an evolutionary pattern and most of theparameters affected by immunosenescence appear to be under geneticcontrol. Immunosenescence can also be sometimes envisaged as the resultof the continuous challenge of the unavoidable exposure to a variety ofantigens such as viruses and bacteria. Immunosenescence is amultifactorial condition leading to many pathologically significanthealth problems, e.g., in the aged population. Age-dependent biologicalchanges such as depletion of hematopoietic stem cells, an increase inPD1+ lymphocytes, a decline in the total number of phagocytes and NKcells and a decline in humoral immunity contribute to the onset ofimmunosenescence. In one aspect, immunosenescence can be measured in anindividual by measuring telomere length in immune cells (See, e.g., U.S.Pat. No. 5,741,677). Immunosenescence can also be determined bydocumenting in an individual a lower than normal number of naïve CD4and/or CD8 T cells, T cell repertoire, the number of PD1-expressing Tcells, e.g., a lower than normal number of PD-1 negative T cells, orresponse to vaccination in a subject greater than or equal to 65 yearsof age.

The term “impaired immune response” refers to a state in which a subjectdoes not have an appropriate immune response, e.g., to cancer,vaccination, pathogen infection, among others. In some embodiments, asubject having an impaired immune response is predicted not to getprotective antibody titer levels following prophylactic vaccination, orin which a subject does not have a decrease in disease burden aftertherapeutic vaccination. A subject can also have an impaired immuneresponse if the subject is a member of a population known to havedecreased immune function or that has a history of decreased immunefunction such as the elderly, subjects undergoing chemotherapytreatment, asplenic subjects, immunocompromised subjects, or subjectshaving HIV/AIDS. Methods described herein allow for the treatment of animpaired immune response by administration of a low, immune enhancing,dose of an mTOR inhibitor, e.g., an allosteric mTOR inhibitor, such asRAD001.

The term “isolated” refers to altered or removed from the natural state.For example, a nucleic acid or a peptide naturally present in a livinganimal is not “isolated,” but the same nucleic acid or peptide partiallyor completely separated from the coexisting materials of its naturalstate is “isolated.” An isolated nucleic acid or protein can exist insubstantially purified form, or can exist in a non-native environmentsuch as, for example, a host cell.

The term “low, immune enhancing, dose” when used in conjunction with anmTOR inhibitor, e.g., an allosteric mTOR inhibitor, e.g., RAD001 orrapamycin, or a catalytic mTOR inhibitor, refers to a dose of mTORinhibitor that partially, but not fully, inhibits mTOR activity, e.g.,as measured by the inhibition of P70 S6 kinase activity. Methods forevaluating mTOR activity, e.g., by inhibition of P70 S6 kinase, arediscussed herein. The dose is insufficient to result in complete immunesuppression but is sufficient to enhance the immune response. In anembodiment, the low, immune enhancing, dose of mTOR inhibitor results ina decrease in the number of PD-1 positive T cells and/or an increase inthe number of PD-1 negative T cells, or an increase in the ratio of PD-1negative T cells/PD-1 positive T cells. In an embodiment, the low,immune enhancing, dose of mTOR inhibitor results in an increase in thenumber of naive T cells. In an embodiment, the low, immune enhancing,dose of mTOR inhibitor results in one or more of the following:

an increase in the expression of one or more of the following markers:CD62L^(high), CD127^(high), CD27⁺, and BCL2, e.g., on memory T cells,e.g., memory T cell precursors;

a decrease in the expression of KLRG1, e.g., on memory T cells, e.g.,memory T cell precursors; and

an increase in the number of memory T cell precursors, e.g., cells withany one or combination of the following characteristics: increasedCD62L^(high), increased CD127^(high), increased CD27⁺, decreased KLRG1,and increased BCL2;

wherein any of the changes described above occurs, e.g., at leasttransiently, e.g., as compared to a non-treated subject.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 90%, at least10 but no more than 90%, at least 15, but no more than 90%, at least 20but no more than 90%, at least 30 but no more than 90%, at least 40 butno more than 90%, at least 50 but no more than 90%, at least 60 but nomore than 90%, or at least 70 but no more than 90%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 80%, at least10 but no more than 80%, at least 15, but no more than 80%, at least 20but no more than 80%, at least 30 but no more than 80%, at least 40 butno more than 80%, at least 50 but no more than 80%, or at least 60 butno more than 80%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 70%, at least10 but no more than 70%, at least 15, but no more than 70%, at least 20but no more than 70%, at least 30 but no more than 70%, at least 40 butno more than 70%, or at least 50 but no more than 70%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 60%, at least10 but no more than 60%, at least 15, but no more than 60%, at least 20but no more than 60%, at least 30 but no more than 60%, or at least 40but no more than 60%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 50%, at least10 but no more than 50%, at least 15, but no more than 50%, at least 20but no more than 50%, at least 30 but no more than 50%, or at least 40but no more than 50%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 40%, at least10 but no more than 40%, at least 15, but no more than 40%, at least 20but no more than 40%, at least 30 but no more than 40%, or at least 35but no more than 40%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 5 but no more than 30%, at least10 but no more than 30%, at least 15, but no more than 30%, at least 20but no more than 30%, or at least 25 but no more than 30%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 1, 2, 3, 4 or 5 but no more than20%, at least 1, 2, 3, 4 or 5 but no more than 30%, at least 1, 2, 3, 4or 5, but no more than 35, at least 1, 2, 3, 4 or 5 but no more than40%, or at least 1, 2, 3, 4 or 5 but no more than 45%.

In an embodiment, a dose of an mTOR inhibitor is associated with, orprovides, mTOR inhibition of at least 1, 2, 3, 4 or 5 but no more than90%.

As is discussed herein, the extent of mTOR inhibition can be expressedas the extent of P70 S6K inhibition, e.g., the extent of mTOR inhibitioncan be determined by the level of decrease in P70 S6K activity, e.g., bythe decrease in phosphorylation of a P70 S6K substrate. The level ofmTOR inhibition can be evaluated by a method described herein, e.g. bythe Boulay assay.

Unless otherwise specified, a “nucleotide sequence encoding an aminoacid sequence” includes all nucleotide sequences that are degenerateversions of each other and that encode the same amino acid sequence. Thephrase nucleotide sequence that encodes a protein or a RNA may alsoinclude introns to the extent that the nucleotide sequence encoding theprotein may in some version contain an intron(s).

In the context of the present invention, the following abbreviations forthe commonly occurring nucleic acid bases are used. “A” refers toadenosine, “C” refers to cytosine, “G” refers to guanosine, “T” refersto thymidine, and “U” refers to uridine.

The terms “acquire” or “acquiring” as used herein, refer to obtainingpossession of a physical entity (e.g., a sample), or a value, e.g., anumerical value, or image, by “directly acquiring” or “indirectlyacquiring” the physical entity or value. “Directly acquiring” meansperforming a process (e.g., performing a synthetic or analytical method,contacting a sample with a detection reagent, or capturing a signal froma sample) to obtain the physical entity or value. “Indirectly acquiring”refers to receiving the physical entity or value from another party orsource (e.g., a third party laboratory that directly acquired thephysical entity or value). Directly acquiring a physical entity includesperforming a process that includes a physical change in a physicalsubstance. Exemplary changes include making a physical entity from twoor more starting materials, shearing or fragmenting a substance,separating or purifying a substance, combining two or more separateentities into a mixture, performing a chemical reaction that includesbreaking or forming a covalent or non-covalent bond. Directly acquiringa value includes performing a process that includes a physical change ina sample or another substance, e.g., performing an analytical processwhich includes a physical change in a substance, e.g., a sample,analyte, or reagent (sometimes referred to herein as “physicalanalysis”), performing an analytical method, e.g., a method whichincludes one or more of the following: separating or purifying asubstance, e.g., an analyte, or a fragment or other derivative thereof,from another substance; combining an analyte, or fragment or otherderivative thereof, with another substance, e.g., a buffer, solvent, orreactant; or changing the structure of an analyte, or a fragment orother derivative thereof, e.g., by breaking or forming a covalent ornon-covalent bond, between a first and a second atom of the analyte;inducing or collecting a signal, e.g., a light based signal, e.g., afluorescent signal, or by changing the structure of a reagent, or afragment or other derivative thereof, e.g., by breaking or forming acovalent or non-covalent bond, between a first and a second atom of thereagent. Directly acquiring a value includes methods in which a computeror detection device, e.g, a scanner is used, e.g., when a change inelectronic state responsive to impingement of a photon on a detector.Directly acquiring a value includes capturing a signal from a sample.

The term “nucleic acid” or “polynucleotide” refers to deoxyribonucleicacids (DNA) or ribonucleic acids (RNA) and polymers thereof in eithersingle- or double-stranded form. Unless specifically limited, the termencompasses nucleic acids containing known analogues of naturalnucleotides that have similar binding properties as the referencenucleic acid and are metabolized in a manner similar to naturallyoccurring nucleotides. Unless otherwise indicated, a particular nucleicacid sequence also implicitly encompasses conservatively modifiedvariants thereof (e.g., degenerate codon substitutions), alleles,orthologs, SNPs, and complementary sequences as well as the sequenceexplicitly indicated. Specifically, degenerate codon substitutions maybe achieved by generating sequences in which the third position of oneor more selected (or all) codons is substituted with mixed-base and/ordeoxyinosine residues (Batzer et al., Nucleic Acid Res. 19:5081 (1991);Ohtsuka et al., J. Biol. Chem. 260:2605-2608 (1985); and Rossolini etal., Mol. Cell. Probes 8:91-98 (1994)).

The term “parenteral” administration of an immunogenic compositionincludes, e.g., subcutaneous (s.c.), intravenous (i.v.), intramuscular(i.m.), or intrasternal injection, intratumoral, or infusion techniques.

The terms “peptide,” “polypeptide,” and “protein” are usedinterchangeably, and refer to a compound comprised of amino acidresidues covalently linked by peptide bonds. A protein or peptide mustcontain at least two amino acids, and no limitation is placed on themaximum number of amino acids that can comprise a protein's or peptide'ssequence. Polypeptides include any peptide or protein comprising two ormore amino acids joined to each other by peptide bonds. As used herein,the term refers to both short chains, which also commonly are referredto in the art as peptides, oligopeptides and oligomers, for example, andto longer chains, which generally are referred to in the art asproteins, of which there are many types. “Polypeptides” include, forexample, biologically active fragments, substantially homologouspolypeptides, oligopeptides, homodimers, heterodimers, variants ofpolypeptides, modified polypeptides, derivatives, analogs, fusionproteins, among others. A polypeptide includes a natural peptide, arecombinant peptide, or a combination thereof.

“Prodrug”, or “pro-drug” refers to a compound that is processed, in thebody of a subject, into a drug. In an embodiment the processingcomprises the breaking or formation of a bond, e.g., a covalent bond.Typically, breakage of a covalent bond releases the drug.

The term “promote” or “enhance” in the context of an immune responserefers to an increase in immune response, such as an increase in theability of immune cells to target and/or kill cancer cells, to targetand/or kill pathogens and pathogen infected cells, and protectiveimmunity following vaccination, among others. In some embodiments,protective immunity refers to the presence of sufficient immune response(such as antibody titers) to protect against subsequent infection by apathogen expressing the same antigen.

The term “prophylaxis” refers to the prevention of or protectivetreatment for a disease or disease state. Prevention may be complete,e.g., the total absence of a disease or disease state. The preventionmay also be partial, such that the likelihood of the occurrence of thedisease or disease state in a subject is less likely to occur than hadthe subject not received the prophylactic treatment.

As used herein, the term “rapalog” refers to a small molecule analog ofrapamycin.

The term “recombinant antibody” refers to an antibody which is generatedusing recombinant DNA technology, such as, for example, an antibodyexpressed by a bacteriophage or yeast expression system. The term shouldalso be construed to mean an antibody which has been generated by thesynthesis of a DNA molecule encoding the antibody and which DNA moleculeexpresses an antibody protein, or an amino acid sequence specifying theantibody, wherein the DNA or amino acid sequence has been obtained usingrecombinant DNA or amino acid sequence technology which is available andwell known in the art.

The term “signal transduction pathway” refers to the biochemicalrelationship between a variety of signal transduction molecules thatplay a role in the transmission of a signal from one portion of a cellto another portion of a cell. The phrase “cell surface receptor”includes molecules and complexes of molecules capable of receiving asignal and transmitting signal across the membrane of a cell.

The term “specifically binds,” refers to an antibody, or a ligand, whichrecognizes and binds with a cognate binding partner (e.g., a moleculepresent on a T cell) protein present in a sample, but the antibody orligand does not substantially recognize or bind other molecules in thesample.

The term “subject”, refers to any living organisms in which an immuneresponse can be elicited (e.g., mammals, human). In an embodiment thesubject is a human. A subject may be of any age. In an embodiment thesubject is an elderly human subject, e.g., 65 years of age or older. Inan embodiment, a subject is a human subject who is not an elderly, e.g.,less than 65 years of age. In an embodiment, a subject is a humanpediatric subject, e.g., 18 years of age or less. In an embodiment, asubject is an adult subject, e.g., older than 18 years of age.

The term “therapeutic” refers to a treatment. A therapeutic effect isobtained by reduction, suppression, remission, or eradication of adisease state.

The term “tumor antigen” or “hyperproliferative disorder antigen” or“antigen associated with a hyperproliferative disorder” refers toantigens that are common to specific hyperproliferative disorders. Incertain aspects, the hyperproliferative disorder antigens of the presentinvention are derived from, cancers including but not limited to primaryor metastatic melanoma, thymoma, lymphoma, sarcoma, lung cancer, livercancer, non-Hodgkin's lymphoma, non-Hodgkins lymphoma, leukemias,uterine cancer, cervical cancer, bladder cancer, kidney cancer andadenocarcinomas such as breast cancer, prostate cancer, ovarian cancer,pancreatic cancer, and the like.

“Unit dosage form” as the term is used herein refers to a dosagesuitable for one administration. By way of example a unit dosage formcan be a tablet, a capsule, or an amount of therapeutic disposed in adelivery device, e.g., a syringe or intravenous drip bag. In anembodiment a unit dosage form is administered in a singleadministration. In an embodiment more than one unit dosage form, e.g.,two tablets, can be administered simultaneously. The term “vaccine”refers to a composition, such as a suspension or solution of antigen orantigenic moieties, usually containing an antigen (e.g., an inactivatedinfectious agent, or some part of the infectious agent, a tumor antigen,among others) that is injected or otherwise introduced into the body toproduce active immunity. The antigen or antigenic moiety making up thevaccine can be a live or killed microorganism, or a natural productpurified from a microorganism or other cell including, but not limitedto tumor cells, a synthetic product, a genetically engineered protein,peptide, polysaccharide or similar product or an allergen. The antigenor antigenic moiety can also be a subunit of a protein, peptide,polysaccharide or similar product.

Ranges: throughout this disclosure, various aspects of the invention canbe presented in a range format. It should be understood that thedescription in range format is merely for convenience and brevity andshould not be construed as an inflexible limitation on the scope of theinvention. Accordingly, the description of a range should be consideredto have specifically disclosed all the possible subranges as well asindividual numerical values within that range. For example, descriptionof a range such as from 1 to 6 should be considered to have specificallydisclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numberswithin that range, for example, 1, 2, 2.7, 3, 4, 5, 5.3, and 6. Asanother example, a range such as 95-99% identity, includes somethingwith 95%, 96%, 97%, 98% or 99% identity, and includes subranges such as96-99%, 96-98%, 96-97%, 97-99%, 97-98% and 98-99% identity. This appliesregardless of the breadth of the range.

The term “preparation of T cells,” refers to a preparation thatcomprises at least one T cell. In an embodiment it is enriched for Tcell as compared to peripheral blood.

The term a “substantially purified” cell refers to a cell that isessentially free of other cell types. A substantially purified cell alsorefers to a cell which has been separated from other cell types withwhich it is normally associated in its naturally occurring state. Insome instances, a population of substantially purified cells refers to ahomogenous population of cells. In other instances, this term referssimply to cell that have been separated from the cells with which theyare naturally associated in their natural state. In some aspects, thecells are cultured in vitro. In other aspects, the cells are notcultured in vitro.

mTOR Inhibitors

As used herein, the term “mTOR inhibitor” refers to a compound orligand, or a pharmaceutically acceptable salt thereof, which inhibitsthe mTOR kinase in a cell. In an embodiment an mTOR inhibitor is anallosteric inhibitor. In an embodiment an mTOR inhibitor is a catalyticinhibitor.

Allosteric mTOR inhibitors include the neutral tricyclic compoundrapamycin (sirolimus), rapamycin-related compounds, that is compoundshaving structural and functional similarity to rapamycin including,e.g., rapamycin derivatives, rapamycin analogs (also referred to asrapalogs) and other macrolide compounds that inhibit mTOR activity.

Rapamycin is a known macrolide antibiotic produced by Streptomyceshygroscopicus having the structure shown in Formula A.

See, e.g., McAlpine, J. B., et al., J. Antibiotics (1991) 44: 688;Schreiber, S. L., et al., J. Am. Chem. Soc. (1991) 113: 7433; U.S. Pat.No. 3,929,992. There are various numbering schemes proposed forrapamycin. To avoid confusion, when specific rapamycin analogs are namedherein, the names are given with reference to rapamycin using thenumbering scheme of formula A.

Rapamycin analogs useful in the invention are, for example,O-substituted analogs in which the hydroxyl group on the cyclohexyl ringof rapamycin is replaced by OR₁ in which R₁ is hydroxyalkyl,hydroxyalkoxyalkyl, acylaminoalkyl, or aminoalkyl; e.g. RAD001, alsoknown as, everolimus as described in U.S. Pat. No. 5,665,772 andWO94/09010 the contents of which are incorporated by reference. Othersuitable rapamycin analogs include those substituted at the 26- or28-position. The rapamycin analog may be an epimer of an analogmentioned above, particularly an epimer of an analog substituted inposition 40, 28 or 26, and may optionally be further hydrogenated, e.g.as described in U.S. Pat. No. 6,015,815, WO95/14023 and WO99/15530 thecontents of which are incorporated by reference, e.g. ABT578 also knownas zotarolimus or a rapamycin analog described in U.S. Pat. No.7,091,213, WO98/02441 and WO01/14387 the contents of which areincorporated by reference, e.g. AP23573 also known as ridaforolimus.

Examples of rapamycin analogs suitable for use in the present inventionfrom U.S. Pat. No. 5,665,772 include, but are not limited to,40-O-benzyl-rapamycin, 40-O-(4′-hydroxymethyl)benzyl-rapamycin,40-O-[4′-(1,2-dihydroxyethyl)]benzyl-rapamycin, 40-O-allyl-rapamycin,40-O-[3′-(2,2-dimethyl-1,3-dioxolan-4(S)-yl)-prop-2′-en-1′-yl]-rapamycin,(2′E,4′S)-40-O-(4′,5′-dihydroxypent-2′-en-1′-yl)-rapamycin,40-O-(2-hydroxy)ethoxycarbonylmethyl-rapamycin,40-O-(2-hydroxy)ethyl-rapamycin, 40-O-(3-hydroxy)propyl-rapamycin,40-O-(6-hydroxy)hexyl-rapamycin,40-O-[2-(2-hydroxy)ethoxy]ethyl-rapamycin,40-O-[(3S)-2,2-dimethyldioxolan-3-yl]methyl-rapamycin,40-0-[(2S)-2,3-dihydroxyprop-1-yl]-rapamycin,40-O-(2-acetoxy)ethyl-rapamycin, 40-O-(2-nicotinoyloxy)ethyl-rapamycin,40-O-[2-(N-morpholino)acetoxy]ethyl-rapamycin,40-O-(2-N-imidazolylacetoxy)ethyl-rapamycin,40-O-[2-(N-methyl-N′-piperazinyl)acetoxy]ethyl-rapamycin,39-O-desmethyl-39,40-O,O-ethylene-rapamycin,(26R)-26-dihydro-40-O-(2-hydroxy)ethyl-rapamycin,40-O-(2-aminoethyl)-rapamycin, 40-O-(2-acetaminoethyl)-rapamycin,40-O-(2-nicotinamidoethyl)-rapamycin,40-O-(2-(N-methyl-imidazo-2′-ylcarbethoxamido)ethyl)-rapamycin,40-O-(2-ethoxycarbonylaminoethyl)-rapamycin,40-O-(2-tolylsulfonamidoethyl)-rapamycin and40-O-[2-(4′,5′-dicarboethoxy-1′,2′,3′-triazol-1′-yl)-ethyl]-rapamycin.

Other rapamycin analogs useful in the present invention are analogswhere the hydroxyl group on the cyclohexyl ring of rapamycin and/or thehydroxy group at the 28 position is replaced with an hydroxyester groupare known, for example, rapamycin analogs found in U.S. RE44,768, e.g.temsirolimus.

Other rapamycin analogs useful in the preset invention include thosewherein the methoxy group at the 16 position is replaced with anothersubstituent, preferably (optionally hydroxy-substituted) alkynyloxy,benzyl, orthomethoxybenzyl or chlorobenzyl and/or wherein the mexthoxygroup at the 39 position is deleted together with the 39 carbon so thatthe cyclohexyl ring of rapamycin becomes a cyclopentyl ring lacking the39 position methyoxy group; e.g. as described in WO95/16691 andWO96/41807 the contents of which are incorporated by reference. Theanalogs can be further modified such that the hydroxy at the 40-positionof rapamycin is alkylated and/or the 32-carbonyl is reduced.

Rapamycin analogs from WO95/16691 include, but are not limited to,16-demthoxy-16-(pent-2-ynyl)oxy-rapamycin,16-demthoxy-16-(but-2-ynyl)oxy-rapamycin,16-demthoxy-16-(propargyl)oxy-rapamycin,16-demethoxy-16-(4-hydroxy-but-2-ynyl)oxy-rapamycin,16-demthoxy-16-benzyloxy-40-O-(2-hydroxyethyl)-rapamycin,16-demthoxy-16-benzyloxy-rapamycin,16-demethoxy-16-ortho-methoxybenzyl-rapamycin,16-demethoxy-40-O-(2-methoxyethyl)-16-pent-2-ynyl)oxy-rapamycin,39-demethoxy-40-desoxy-39-formyl-42-nor-rapamycin,39-demethoxy-40-desoxy-39-hydroxymethyl-42-nor-rapamycin,39-demethoxy-40-desoxy-39-carboxy-42-nor-rapamycin,39-demethoxy-40-desoxy-39-(4-methyl-piperazin-1-yl)carbonyl-42-nor-rapamycin,39-demethoxy-40-desoxy-39-(morpholin-4-yl)carbonyl-42-nor-rapamycin,39-demethoxy-40-desoxy-39-[N-methyl,N-(2-pyridin-2-yl-ethyl)]carbamoyl-42-nor-rapamycin and39-demethoxy-40-desoxy-39-(p-toluenesulfonylhydrazonomethyl)-42-nor-rapamycin.

Rapamycin analogs from WO96/41807 include, but are not limited to,32-deoxo-rapamycin, 16-O-pent-2-ynyl-32-deoxo-rapamycin,16-O-pent-2-ynyl-32-deoxo-40-O-(2-hydroxy-ethyl)-rapamycin,16-O-pent-2-ynyl-32-(S)-dihydro-40-O-(2-hydroxyethyl)-rapamycin,32(S)-dihydro-40-O-(2-methoxy)ethyl-rapamycin and32(S)-dihydro-40-O-(2-hydroxyethyl)-rapamycin.

Another suitable rapamycin analog is umirolimus as described inUS2005/0101624 the contents of which are incorporated by reference.

In mammalian cells, the target of rapamycin (mTOR) kinase exists as amultiprotein complex described as the mTORC1 complex or mTORC2 complex,which senses the availability of nutrients and energy and integratesinputs from growth factors and stress signaling. The mTORC1 complex issensitive to allosteric mTOR inhibitors such as rapamycin, is composedof mTOR, GβL, and regulatory associated proteins of mTOR (raptor), andbinds to the peptidyl-prolyl isomerase FKBP12 protein (a FK506-bindingprotein 1A, 12 kDa). In contrast, the mTORC2 complex is composed ofmTOR, GβL, and rapamycin-insensitive companion proteins of mTOR(rictor), and does not bind to the FKBP12 protein in vitro.

The mTORC1 complex has been shown to be involved in proteintranslational control, operating as a growth factor and nutrientsensitive apparatus for growth and proliferation regulation. mTORC1regulates protein translation via two key downstream substrates: P70 S6kinase, which in turn phosphorylates ribosomal protein P70 S6, andeukaryotic translation initiation factor 4E binding protein 1 (4EBP1),which plays a key role in modulating eIF4E regulated cap-dependenttranslation. The mTORC1 complex regulates cell growth in response to theenergy and nutrient homeostasis of the cell, and the deregulation ofmTORC1 is common in a wide variety of human cancers. The function ofmTORC2 involves the regulation of cell survival via phosphorylation ofAkt and the modulation of actin cytoskeleton dynamics.

The mTORC1 complex is sensitive to allosteric mTOR inhibitors such asrapamycin and derivatives in large part due to rapamycin's mode ofaction, which involves the formation of an intracellular complex withthe FKBP12 and binding to the FKBP12-rapamycin binding (FRB) domain ofmTOR. This results in a conformational change in mTORC1 which isbelieved to alter and weaken the interaction with its scaffoldingprotein raptor, in turn impeding substrates such as P70 S6K1 fromaccessing mTOR and being phosphorylated. Rapamycin and rapalogues suchas RAD001 have gained clinical relevance by inhibiting hyperactivationof mTOR associated with both benign and malignant proliferationdisorders.

RAD001, otherwise known as everolimus (Afinitor®), has the chemical name(1R,9S,12S,15R,16E,18R,19R,21R,23S,24E,26E,28E,30S,32S,35R)-1,18-dihydroxy-12-{(1R)-2-[(1S,3R,4R)-4-(2-hydroxyethoxy)-3-methoxycyclohexyl]-1-methylethyl}-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-aza-tricyclo[30.3.1.04,9]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentaoneand the following chemical structure

Everolimus is an FDA approved drug for the treatment of advanced kidneycancer and is being investigated in several other phase III clinicaltrials in oncology. Preclinical studies have shown that Everolimus isable to inhibit the proliferation of a wide variety of tumor cell linesboth in vitro and in vivo, presumably through the suppression ofrapamycin sensitive mTORC1 function. Everolimus, as a derivative ofrapamycin, is an allosteric mTOR inhibitor that is highly potent atinhibiting part of the mTORC1 function, namely P70 S6 kinase (P70 S6K)and the downstream P70 S6K substrate P70 S6. Allosteric mTOR inhibitorslike everolimus (and other rapamycin analogs) have little or no effectat inhibiting the mTORC2 pathway, or its resulting activation of Aktsignaling. Further examples of allosteric mTOR inhibitors includesirolimus (rapamycin, AY-22989),40-[3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate]-rapamycin (alsocalled temsirolimus or CCI-779) and ridaforolimus (AP-23573/MK-8669).Other examples of allosteric mTOR inhibitors include zotarolimus(ABT578) and umirolimus.

Alternatively or additionally, catalytic, ATP-competitive mTORinhibitors have been found to target the mTOR kinase domain directly andtarget both mTORC1 and mTORC2. These are also more complete inhibitorsof mTORC1 than such allosteric mTOR inhibitors as rapamycin, becausethey modulate rapamycin-resistant mTORC1 outputs such as 4EBP1-T37/46phosphorylation and cap-dependent translation.

BEZ235 is a catalytic mTOR inhibitor, having the chemical name2-methyl-2-[4-(3-methyl-2-oxo-8-quinolin-3-yl-2,3-dihydro-imidazo[4,5-c]quinolin-1-yl)-phenyl]-propionitrileand the following chemical structure

BEZ235 may also be used in its monotosylate salt form. The synthesis ofBEZ235 is described in WO2006/122806.

As a catalytic mTOR inhibitor BEZ235 is capable of shutting down thecomplete function of mTORC1 complex, including both the rapamycinsensitive (phosphorylation of P70 S6K, and subsequently phosphorylationof P70 S6) and rapamycin insensitive (phosphorylation of 4EBP1)functions. BEZ235 has a differential effect according to the drugconcentration used, whereby mTOR inhibition predominates at a lowconcentration (less than 100 nmol/L) but dual PI3K/mTOR inhibition atrelatively higher concentrations (approximately 500 nmol/L), Serra etal., 2008.

Another catalytic mTOR inhibitor described in the literature is CCG168(otherwise known as AZD-8055, Chresta, C. M., et al., Cancer Res, 2010,70(1), 288-298) which has the chemical name{5-[2,4-bis-((S)-3-methyl-morpholin-4-yl)-pyrido[2,3d]pyrimidin-7-yl]-2-methoxy-phenyl}-methanoland the following chemical structure

Another catalytic mTOR inhibitor described in the literature is3-[2,4-bis[(3S)-3-methylmorpholin-4-yl]pyrido[2,3-d]pyrimidin-7-yl]-N-methylbenzamide(WO09104019) having the following chemical structure:

Another catalytic mTOR inhibitor described in the literature is3-(2-aminobenzo[d]oxazol-5-yl)-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine(WO10051043 and WO2013023184) having following chemical structure:

Another catalytic mTOR inhibitor described in the literature isN-(3-(N-(3-((3,5-dimethoxyphenyl)amino)quinoxaline-2-yl)sulfamoyl)phenyl)-3-methoxy-4-methylbenzamide(WO07044729 and WO12006552) having the following chemical structure:

Another catalytic mTOR inhibitor described in the literature is PKI-587(Venkatesan, A. M., J. Med. Chem., 2010, 53, 2636-2645) which has thechemical name1-[4-[4-(dimethylamino)piperidine-1-carbonyl]phenyl]-3-[4-(4,6-dimorpholino-1,3,5-triazin-2-yl)phenyl]ureaand having the following chemical structure:

Another catalytic mTOR inhibitor described in the literature isGSK-2126458 (ACS Med. Chem. Lett., 2010, 1, 39-43) which has thechemical name2,4-difluoro-N-{2-methoxy-5-[4-(4-pyridazinyl)-6-quinolinyl]-3-pyridinyl}benzenesulfonamideand having the following chemical structure:

Another catalytic mTOR inhibitor described in the literature is5-(9-isopropyl-8-methyl-2-morpholino-9H-purin-6-yl)pyrimidin-2-amine(WO10114484) having the following chemical structure:

Another catalytic mTOR inhibitor described in the literature is(E)-N-(8-(6-amino-5-(trifluoromethyl)pyridin-3-yl)-1-(6-(2-cyanopropan-2-yl)pyridin-3-yl)-3-methyl-1H-imidazo[4,5-c]quinolin-2(3H)-ylidene)cyanamide(WO12007926) having the following chemical structure:

Further examples of catalytic mTOR inhibitors include8-(6-methoxy-pyridin-3-yl)-3-methyl-1-(4-piperazin-1-yl-3-trifluoromethyl-phenyl)-1,3-dihydro-imidazo[4,5-c]quinolin-2-one(WO2006/122806) and Ku-0063794 (Garcia-Martinez J M, et al., Biochem J.,2009, 421(1), 29-42. Ku-0063794 is a specific inhibitor of the mammaliantarget of rapamycin (mTOR).) WYE-354 is another example of a catalyticmTor inhibitor (Yu K, et al. (2009). Biochemical, Cellular, and In vivoActivity of Novel ATP-Competitive and Selective Inhibitors of theMammalian Target of Rapamycin. Cancer Res. 69(15): 6232-6240).

mTOR inhibitors useful according to the present invention also includeprodrugs, derivatives, pharmaceutically acceptable salts, or analogsthereof of any of the foregoing.

mTOR inhibitors, such as RAD001, may be formulated for delivery based onwell-established methods in the art based on the particular dosagesdescribed herein. In particular, U.S. Pat. No. 6,004,973 (incorporatedherein by reference) provides examples of formulations useable with themTOR inhibitors described herein.

Downstream Inhibitors

Many of the methods described herein rely on the use of a low, immuneenhancing, dose of an mTOR inhibitors, e.g., to increase the level ofPD1 negative immune effector cells, e.g., T cells, to decrease the levelof PD1 positive immune effector cells, e.g., T cells, to increase theratio of PD1 negative immune effector cells, e.g., T cells/PD1 positiveimmune effector cells, e.g., T cells, to increase the level of naive Tcells, or to increase the number of memory T cell precursors or theexpression level of memory T cell precursor markers. Any of thesemethods can also be practiced with, in place of the low, immuneenhancing, dose of an mTOR inhibitors, the administration of aninhibitor of a downstream element in the pathway, e.g., P70 S6K ormTORC1. Examples of inhibitors of P70 S6K include PF-4708671 (Pfizer) orLY2584702 tosylate (Eli Lilly). Examples of inhibitors of mTORC1 includeallosteric mTOR inhibitors that specifically inhibit mTORC1, but do notinhibit mTORC2. In an embodiment, a downstream inhibitor is administeredat a dose effective to increase the level of PD1 negative immuneeffector cells, e.g., T cells, to decrease the level of PD1 positiveimmune effector cells, e.g., T cells, to increase the ratio of PD1negative immune effector cells, e.g., T cells/PD1 positive immuneeffector cells, e.g., T cells, to increase the level of naive T cells,or to increase the number of memory T cell precursors or the expressionlevel of memory T cell precursor markers.

Evaluation of mTOR Inhibition

mTOR phosphorylates the kinase P70 S6, thereby activating P70 S6K andallowing it to phosphorylate its substrate. The extent of mTORinhibition can be expressed as the extent of P70 S6K inhibition, e.g.,the extent of mTOR inhibition can be determined by the level of decreasein P70 S6K activity, e.g., by the decrease in phosphorylation of a P70S6K substrate. One can determine the level of mTOR inhibition, bymeasuring P70 S6K activity (the ability of P70 S6K to phsophorylate asubstrate), in the absence of inhibitor, e.g., prior to administrationof inhibitor, and in the presence of inhibitor, or after theadministration of inhibitor. The level of inhibition of P70 S6K givesthe level of mTOR inhibition. Thus, if P70 S6K is inhibited by 40%, mTORactivity, as measured by P70 S6K activity, is inhibited by 40%. Theextent or level of inhibition referred to herein is the average level ofinhibition over the dosage interval. By way of example, if the inhibitoris given once per week, the level of inhibition is given by the averagelevel of inhibition over that interval, namely a week.

Boulay et al., Cancer Res, 2004, 64:252-61, hereby incorporated byreference, teaches an assay that can be used to assess the level of mTORinhibition (referred to herein as the Boulay assay). In an embodiment,the assay relies on the measurement of P70 S6 kinase activity frombiological samples before and after administration of an mTOR inhibitor,e.g., RAD001. Samples can be taken at preselected times after treatmentwith an mTOR inhibitor, e.g., 24, 48, and 72 hours after treatment.Biological samples, e.g., from skin or peripheral blood mononuclearcells (PBMCs) can be used. Total protein extracts are prepared from thesamples. P70 S6 kinase is isolated from the protein extracts byimmunoprecipitation using an antibody that specifically recognizes theP70 S6 kinase. Activity of the isolated P70 S6 kinase can be measured inan in vitro kinase assay. The isolated kinase can be incubated with 40Sribosomal subunit substrates (which is an endogenous substrate of P70S6K) and gamma-³²P under conditions that allow phosphorylation of thesubstrate. Then the reaction mixture can be resolved on an SDS-PAGE gel,and ³²P signal analyzed using a PhosphorImager. A ³²P signalcorresponding to the size of the 40S ribosomal subunit indicatesphosphorylated substrate and the activity of P70 S6K. Increases anddecreases in kinase activity can be calculated by quantifying the areaand intensity of the ³²P signal of the phosphorylated substrate (e.g.,using ImageQuant, Molecular Dynamics), assigning arbitrary unit valuesto the quantified signal, and comparing the values from afteradministration with values from before administration or with areference value. For example, percent inhibition of kinase activity canbe calculated with the following formula: 1-(value obtained afteradministration/value obtained before administration)×100. As describedabove, the extent or level of inhibition referred to herein is theaverage level of inhibition over the dosage interval.

Methods for the evaluation of kinase activity, e.g., P70 S6 kinaseactivity, are also provided in U.S. Pat. No. 7,727,950, herebyincorporated by reference.

The level of mTOR inhibition can also be evaluated by a change in theration of PD1 negative to PD1 positive T cells. T cells from peripheralblood can be identified as PD1 negative or positive by art-knownmethods.

Low-Dose mTOR Inhibitors

Methods described herein use low, immune enhancing, dose mTORinhibitors, doses of mTOR inhibitors, e.g., allosteric mTOR inhibitors,including rapalogs such as RAD001. In contrast, levels of inhibitor thatfully or near fully inhibit the mTOR pathway are immunosuppressive andare used, e.g., to prevent organ transplant rejection. In addition, highdoses of rapalogs that fully inhibit mTOR also inhibit tumor cell growthand are used to treat a variety of cancers (See, e.g., Antineoplasticeffects of mammalian target of rapamycine inhibitors. Salvadori M. WorldJ Transplant. 2012 October 24; 2(5):74-83; Current and Future TreatmentStrategies for Patients with Advanced Hepatocellular Carcinomá: Role ofmTOR Inhibition. Finn R S. Liver Cancer. 2012 November; 1(3-4):247-256;Emerging Signaling Pathways in Hepatocellular Carcinoma. Moeini A,Cornelia H, Villanueva A. Liver Cancer. 2012 September; 1(2):83-93;Targeted cancer therapy—Are the days of systemic chemotherapy numbered?Joo W D, Visintin I, Mor G. Maturitas. 2013 Sep. 20.; Role of naturaland adaptive immunity in renal cell carcinoma response to VEGFR-TKIs andmTOR inhibitor. Santoni M, Berardi R, Amantini C, Burattini L, SantiniD, Santoni G, Cascinu S. Int J Cancer. 2013 Oct. 2).

The present invention is based, at least in part, on the surprisingfinding that doses of mTOR inhibitors well below those used in currentclinical settings had a superior effect in increasing an immune responsein a subject and increasing the ratio of PD-1 negative T cells/PD-1positive T cells. It was surprising that low doses of mTOR inhibitors,producing only partial inhibition of mTOR activity, were able toeffectively improve immune responses in human subjects and increase theratio of PD-1 negative T cells/PD-1 positive T cells.

Alternatively, or in addition, without wishing to be bound by anytheory, it is believed that low, a low, immune enhancing, dose of anmTOR inhibitor can increase naive T cell numbers, e.g., at leasttransiently, e.g., as compared to a non-treated subject. Alternativelyor additionally, again while not wishing to be bound by theory, it isbelieved that treatment with an mTOR inhibitor after a sufficient amountof time or sufficient dosing results in one or more of the following:

an increase in the expression of one or more of the following markers:CD62L^(high), CD127^(high), CD27⁺, and BCL2, e.g., on memory T cells,e.g., memory T cell precursors;

a decrease in the expression of KLRG1, e.g., on memory T cells, e.g.,memory T cell precursors; and

an increase in the number of memory T cell precursors, e.g., cells withany one or combination of the following characteristics: increasedCD62L^(high), increased CD127^(high), increased CD27⁺, decreased KLRG1,and increased BCL2;

and wherein any of the changes described above occurs, e.g., at leasttransiently, e.g., as compared to a non-treated subject (Araki, K et al.(2009) Nature 460:108-112). Memory T cell precursors are memory T cellsthat are early in the differentiation program. For example, memory Tcells have one or more of the following characteristics: increasedCD62L^(high), increased CD127^(high), increased CD27⁺, decreased KLRG1,and/or increased BCL2.

Accordingly, in one aspect, the present invention provides compositions,e.g., provides as a unit dosage form, comprising an mTOR inhibitor,e.g., a allosteric mTOR inhibitor, e.g., RAD001, at a concentration ofabout 0.005-1.5 mg, about 0.005-1.5 mg, about 0.01-1 mg, about 0.01-0.7mg, about 0.01-0.5 mg, or about 0.1-0.5 mg. In a further aspect thepresent invention provides compositions comprising an mTOR inhibitor,e.g., RAD001, at a concentration of 0.005-1.5 mg, 0.005-1.5 mg, 0.01-1mg, 0.01-0.7 mg, 0.01-0.5 mg, or 0.1-0.5 mg. More particularly, in oneaspect, the invention provides compositions comprising an mTORinhibitor, e.g., RAD001, at a dose of about 0.005 mg, 0.006 mg, 0.007mg, 0.008 mg, 0.009 mg, 0.01 mg, 0.02 mg, 0.03 mg, 0.04 mg, 0.05 mg,0.06 mg, 0.07 mg, 0.08 mg, 0.09 mg, 0.1 mg, 0.2 mg, 0.3 mg, 0.4 mg, 0.5mg, 0.6 mg, 0.7 mg, 0.8 mg, 0.9 mg, or 1.0 mg. In one aspect, the mTORinhibitor, e.g., RAD001, is at a dose of 0.5 mg or less. In a stillfurther aspect, the mTOR inhibitor, e.g., RAD001, is at a dose of about0.5 mg. In a further aspect, the invention provides compositionscomprising an mTOR inhibitor, e.g., RAD001, at a dose of 0.005 mg, 0.006mg, 0.007 mg, 0.008 mg, 0.009 mg, 0.01 mg, 0.02 mg, 0.03 mg, 0.04 mg,0.05 mg, 0.06 mg, 0.07 mg, 0.08 mg, 0.09 mg, 0.1 mg, 0.2 mg, 0.3 mg, 0.4mg, 0.5 mg, 0.6 mg, 0.7 mg, 0.8 mg, 0.9 mg, or 1.0 mg. In one aspect,the mTOR inhibitor, e.g., RAD001, is at a dose of 0.5 mg or less. In astill further aspect, the mTOR inhibitor, e.g., RAD001, is at a dose of0.5 mg.

In a further aspect, the invention relates to compositions comprising anmTOR inhibitor that is not RAD001, in an amount that is bioequivalent tothe specific amounts or doses specified for RAD001.

In a further aspect, the invention relates to compositions comprising anmTOR inhibitor in an amount sufficient to inhibit P70 S6 kinase by nogreater than 80%. In a further aspect the compositions described hereincomprise an mTOR inhibitor in an amount sufficient to inhibit P70 S6kinase by no greater than 38%.

In an embodiment, the invention relates to a composition, or dosageform, of an mTOR inhibitor, e.g., an allosteric mTOR inhibitor, e.g., arapalog, rapamycin, or RAD001, or a catalytic mTOR inhibitor, which,when administered on a selected dosing regimen, e.g., once daily or onceweekly, is associated with: a level of mTOR inhibition that is notassociated with complete, or significant immune suppression, but isassociated with enhancement of the immune response.

In a further aspect, the invention provides methods for enhancing immuneresponse, e.g., treating immunosenescence, comprising a step ofadministering to a subject an mTOR inhibitor. In some embodiments, anmTOR inhibitor, e.g., an allosteric mTOR inhibitor, e.g., RAD001, can beadministered at a dose of about 0.005-1.5 mg daily, about 0.01-1 mgdaily, about 0.01-0.7 mg daily, about 0.01-0.5 mg daily, or about0.1-0.5 mg daily. In a further aspect, an mTOR inhibitor, e.g., RAD001,can be administered at a dose of about 0.1-20 mg weekly, about 0.5-15 mgweekly, about 1-10 mg weekly, or about 3-7 mg weekly. In someembodiments, an mTOR inhibitor, e.g., RAD001, can be administered at adose of 0.005-1.5 mg daily, 0.01-1 mg daily, 0.01-0.7 mg daily, 0.01-0.5mg daily, or 0.1-0.5 mg daily. In some embodiments, an mTOR inhibitor,e.g., RAD001, can be administered at a dose of about 0.1-20 mg weekly,0.5-15 mg weekly, 1-10 mg weekly, 3-7 mg weekly, or 5 mg weekly.

In a further aspect, the invention relates to methods for enhancingimmune response, e.g., treating immunosenescence, comprising the step ofadministering an mTOR inhibitor that is not RAD001, in an amount that isbioequivalent to the specific amounts or doses described herein forRAD001.

In some embodiments, an mTOR inhibitor, e.g., a allosteric mTORinhibitor, eg., e.g., RAD001, can be administered at a dose of about0.005 mg daily, 0.006 mg daily, 0.007 mg daily, 0.008 mg daily, 0.009 mgdaily, 0.01 mg daily, 0.02 mg daily, 0.03 mg daily, 0.04 mg daily, 0.05mg daily, 0.06 mg daily, 0.07 mg daily, 0.08 mg daily, 0.09 mg daily,0.1 mg daily, 0.2 mg daily, 0.3 mg daily, 0.4 mg daily, 0.5 mg daily,0.6 mg daily, 0.7 mg daily, 0.8 mg daily, 0.9 mg daily, or 1.0 mg daily.In some embodiments, RAD001 can be administered at a dose of no greaterthan about 0.7 mg in a 24 hour period. In some embodiments, an mTORinhibitor, e.g., an allosteric mTOR inhibitor, e.g., RAD001, can beadministered at a dose of no greater than about 0.5 mg in a 24 hourperiod. In some embodiments, RAD001 can be administered at a dose of 0.5mg or less daily. In some embodiments, RAD001 can be administered at adose of 0.5 mg daily.

In a further aspect, the invention can utilize an mTOR inhibitor otherthan RAD001 in an amount that is bioequivalent to the specific amountsor doses specified for RAD001.

In some embodiments, an mTOR inhibitor, e.g., an allosteric mTORinhibitor, e.g., RAD001, can be administered at a dose of 0.1 mg weekly,0.2 mg weekly, 0.3 mg weekly, 0.4 mg weekly, 0.5 mg weekly, 0.6 mgweekly, 0.7 mg weekly, 0.8 mg weekly, 0.9 mg weekly, 1 mg weekly, 2 mgweekly, 3 mg weekly, 4 mg weekly, 5 mg weekly, 6 mg weekly, 7 mg weekly,8 mg weekly, 9 mg weekly, 10 mg weekly, 11 mg weekly, 12 mg weekly, 13mg weekly, 14 mg weekly, 15 mg weekly, 16 mg weekly, 17 mg weekly, 18 mgweekly, 19 mg weekly, or 20 mg weekly. In some embodiments, an mTORinhibitor, e.g., an allosteric mTOR inhibitor, e.g., RAD001, isadministered at a dose of 5 mg or less weekly. In some embodiments, anmTOR inhibitor, e.g., an allosteric mTOR inhibitor, e.g., RAD001, isadministered at a dose of 5 mg weekly.

In some embodiments, the invention can utilize an mTOR inhibitor otherthan RAD001 in an amount that is bioequivalent to the specific amountsor doses specified for RAD001.

An mTOR inhibitor, e.g., an allosteric mTOR inhibitor, e.g., a rapalog,rapamycin, or RAD001, or a catalytic mTOR inhibitor, can be provided ina sustained release formulation. Any of the compositions or unit dosageforms described herein can be provided in a sustained releaseformulation. In some embodiments, a sustained release formulation willhave lower bioavailability than an immediate release formulation. E.g.,in embodiments, to attain a similar therapeutic effect of an immediaterelease formation a sustained release formulation will have from about 2to about 5, about 2.5 to about 3.5, or about 3 times the amount ofinhibitor provided in the immediate release formulation.

In an embodiment, immediate release forms, e.g., of RAD001, typicallyused for one administration per week, having 0.1 to 20, 0.5 to 10, 2.5to 7.5, 3 to 6, or about 5, mgs per unit dosage form, are provided. Foronce per week administrations, these immediate release formulationscorrespond to sustained release forms, having, respectively, 0.3 to 60,1.5 to 30, 7.5 to 22.5, 9 to 18, or about 15 mgs of an mTOR inhibitor,e.g., an allosteric mTOR inhibitor, e.g., rapamycin or RAD001. Inembodiments both forms are administered on a once/week basis.

In an embodiment, immediate release forms, e.g., of RAD001, typicallyused for one administration per day, having 0.005 to 1.5, 0.01 to 1.5,0.1 to 1.5, 0.2 to 1.5, 0.3 to 1.5, 0.4 to 1.5, 0.5 to 1.5, 0.6 to 1.5,0.7 to 1.5, 0.8 to 1.5, 1.0 to 1.5, 0.3 to 0.6, or about 0.5 mgs perunit dosage form, are provided. For once per day administrations, theseimmediate release forms correspond to sustained release forms, having,respectively, 0.015 to 4.5, 0.03 to 4.5, 0.3 to 4.5, 0.6 to 4.5, 0.9 to4.5, 1.2 to 4.5, 1.5 to 4.5, 1.8 to 4.5, 2.1 to 4.5, 2.4 to 4.5, 3.0 to4.5, 0.9 to 1.8, or about 1.5 mgs of an mTOR inhibitor, e.g., anallosteric mTOR inhibitor, e.g., rapamycin or RAD001. For once per weekadministrations, these immediate release forms correspond to sustainedrelease forms, having, respectively, 0.1 to 30, 0.2 to 30, 2 to 30, 4 to30, 6 to 30, 8 to 30, 10 to 30, 1.2 to 30, 14 to 30, 16 to 30, 20 to 30,6 to 12, or about 10 mgs of an mTOR inhibitor, e.g., an allosteric mTORinhibitor, e.g., rapamycin or RAD001.

In an embodiment, immediate release forms, e.g., of RAD001, typicallyused for one administration per day, having 0.01 to 1.0 mgs per unitdosage form, are provided. For once per day administrations, theseimmediate release forms correspond to sustained release forms, having,respectively, 0.03 to 3 mgs of an mTOR inhibitor, e.g., an allostericmTOR inhibitor, e.g., rapamycin or RAD001. For once per weekadministrations, these immediate release forms correspond to sustainedrelease forms, having, respectively, 0.2 to 20 mgs of an mTOR inhibitor,e.g., an allosteric mTOR inhibitor, e.g., rapamycin or RAD001.

In an embodiment, immediate release forms, e.g., of RAD001, typicallyused for one administration per week, having 0.5 to 5.0 mgs per unitdosage form, are provided. For once per week administrations, theseimmediate release forms correspond to sustained release forms, having,respectively, 1.5 to 15 mgs of an mTOR inhibitor, e.g., an allostericmTOR inhibitor, e.g., rapamycin or RAD001.

As described above, one target of the mTOR pathway is the P70 S6 kinase.Thus, doses of mTOR inhibitors which are useful in the methods andcompositions described herein are those which are sufficient to achieveno greater than 80% inhibition of P70 S6 kinase activity relative to theactivity of the P70 S6 kinase in the absence of an mTOR inhibitor, e.g.,as measured by an assay described herein, e.g., the Boulay assay. In afurther aspect, the invention provides an amount of an mTOR inhibitorsufficient to achieve no greater than 38% inhibition of P70 S6 kinaseactivity relative to P70 S6 kinase activity in the absence of an mTORinhibitor, e.g., as measured by an assay described herein, e.g., theBoulay assay. In one aspect the dose of mTOR inhibitor useful in themethods and compositions of the invention is sufficient to achieve,e.g., when administered to a human subject, 90%, 89%, 88%, 87%, 86%,85%, 84%, 83%, 82%, 81%, 80%, 79%, 78%, 77%, 76%, 75%, 74%, 73%, 72%,71%, 70%, 69%, 68%, 67%, 66%, 65%, 64%, 63%, 62%, 61%, 60%, 59%, 58%,57%, 56%, 55%, 54%, 54%, 53%, 52%, 51%, 50%, 49%, 48%, 47%, 46%, 45%,44%, 43%, 42%, 41%, 40%, 39%, 38%, 37%, 36%, 35%, 34%, 33%, 32%, 31%,30%, 29%, 28%, 27%, 26%, 25%, 24%, 23%, 22%, 21%, 20%, 19%, 18%, 17%,16%, 15%, 14%, 13%, 12%, 11%, or 10% or less inhibition of P70 S6 kinaseactivity, e.g., as measured by an assay described herein, e.g., theBoulay assay.

In one aspect the dose of mTOR inhibitor useful in the methods andcompositions of the invention is sufficient to achieve, e.g., whenadministered to a human subject, 90+/−5% (i.e., 85-95%), 89+/−5%,88+/−5%, 87+/−5%, 86+/−5%, 85+/−5%, 84+/−5%, 83+/−5%, 82+/−5%, 81+/−5%,80+/−5%, 79+/−5%, 78+/−5%, 77+/−5%, 76+/−5%, 75+/−5%, 74+/−5%, 73+/−5%,72+/−5%, 71+/−5%, 70+/−5%, 69+/−5%, 68+/−5%, 67+/−5%, 66+/−5%, 65+/−5%,64+/−5%, 63+/−5%, 62+/−5%, 61+/−5%, 60+/−5%, 59+/−5%, 58+/−5%, 57+/−5%,56+/−5%, 55+/−5%, 54+/−5%, 54+/−5%, 53+/−5%, 52+/−5%, 51+/−5%, 50+/−5%,49+/−5%, 48+/−5%, 47+/−5%, 46+/−5%, 45+/−5%, 44+/−5%, 43+/−5%, 42+/−5%,41+/−5%, 40+/−5%, 39+/−5%, 38+/−5%, 37+/−5%, 36+/−5%, 35+/−5%, 34+/−5%,33+/−5%, 32+/−5%, 31+/−5%, 30+/−5%, 29+/−5%, 28+/−5%, 27+/−5%, 26+/−5%,25+/−5%, 24+/−5%, 23+/−5%, 22+/−5%, 21+/−5%, 20+/−5%, 19+/−5%, 18+/−5%,17+/−5%, 16+/−5%, 15+/−5%, 14+/−5%, 13+/−5%, 12+/−5%, 11+/−5%, or10+/−5%, inhibition of P70 S6 kinase activity, e.g., as measured by anassay described herein, e.g., the Boulay assay.

P70 S6 kinase activity in a subject may be measured using methods knownin the art, such as, for example, according to the methods described inU.S. Pat. No. 7,727,950, by immunoblot analysis of phosphoP70 S6K levelsand/or phosphoP70 S6 levels or by in vitro kinase activity assays.

In a further aspect, the invention relates to compositions comprising anmTOR inhibitor such as an mTOR inhibitor, e.g., an allosteric mTORinhibitor, e.g., RAD001. Doses of an mTOR inhibitor, e.g., an allostericmTOR inhibitor, e.g., RAD001, in such compositions can be in the rangeof about 30 pM to 4 nM. In one aspect, the dose of an mTOR inhibitor,e.g., an allosteric mTOR inhibitor, e.g., RAD001, is in the range ofabout 50 pM to 2 nM, about 100 pM to 1.5 nM, about 200 pM to 1 nM, orabout 300 pM to 500 pM. In one aspect, the dose of RAD001 is in therange of 50 pM to 2 nM, 100 pM to 1.5 nM, 200 pM to 1 nM, or 300 pM to500 pM. In a further aspect the dose of RAD001 is about 30 pM, 40 pM, 50pM, 60 pM, 70 pM, 80 pM, 90 pM, 100 pM, 150 pM, 200 pM, 250 pM, 300 pM,350 pM, 400 pM, 450 pM, 500 pM, 550 pM, 600 pM, 650 pM, 700 pM, 750 pM,800 pM, 850 pM, 900 pM, 950 pM, 1 nM, 1.5 nM, 2 nM, 2.5 nM, 3 nM, 3.5nM, or 4 nM.

In a further aspect, the invention can utilize an mTOR inhibitor otherthan RAD001 in an amount that is bioequivalent to the specific amountsor doses specified for RAD001.

The invention further relates to methods comprising the administrationof an mTOR inhibitor to a subject. Such methods may employ doses of themTOR inhibitor RAD001 in the range of about 30 pM to 4 nM. In a furtheraspect, the dose of RAD001 can be in the range of about 50 pM to 2 nM,about 100 pM to 1.5 nM, about 200 pM to 1 nM, or about 300 pM to 500 pM.In one aspect, the dose of RAD001 is in the range of 50 pM to 2 nM, 100pM to 1.5 nM, 200 pM to 1 nM, or 300 pM to 500 pM. In a further aspectthe dose of RAD001 is about 30 pM, 40 pM, 50 pM, 60 pM, 70 pM, 80 pM, 90pM, 100 pM, 150 pM, 200 pM, 250 pM, 300 pM, 350 pM, 400 pM, 450 pM, 500pM, 550 pM, 600 pM, 650 pM, 700 pM, 750 pM, 800 pM, 850 pM, 900 pM, 950pM, 1 nM, 1.5 nM, 2 nM, 2.5 nM, 3 nM, 3.5 nM, or 4 nM.

In a further aspect, the methods of the invention can utilize an mTORinhibitor other than RAD001 in an amount that is bioequivalent to thespecific amounts or doses specified for RAD001.

As used herein, the term “about” in reference to a dose of mTORinhibitor refers to up to a +/−10% variability in the amount of mTORinhibitor, but can include no variability around the stated dose.

In some embodiments, the invention provides methods comprisingadministering to a subject an mTOR inhibitor, e.g., an allostericinhibitor, e.g., RAD001, at a dosage within a target trough level. Insome embodiments, the trough level is significantly lower than troughlevels associated with dosing regimens used in organ transplant andcancer patients. In an embodiment mTOR inhibitor, e.g., RAD001, orrapamycin, is administered to result in a trough level that is less than½, ¼, 1/10, or 1/20 of the trough level that results inimmunosuppression or an anticancer effect. In an embodiment mTORinhibitor, e.g., RAD001, or rapamycin, is administered to result in atrough level that is less than ½, ¼, 1/10, or 1/20 of the trough levelprovided on the FDA approved packaging insert for use inimmunosuppression or an anticancer indications.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g., an allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 0.1 to 3 ng/ml, 0.1to 2 ng/ml, or 0.1 to 1 ng/ml.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g., an allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 00.2 to 3 ng/ml, 0.2to 2 ng/ml, or 0.2 to 1 ng/ml.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g. an, allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 0.3 to 3 ng/ml, 0.3to 2 ng/ml, or 0.3 to 1 ng/ml.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g., an allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 0.4 to 3 ng/ml, 0.4to 2 ng/ml, or 0.4 to 1 ng/ml.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g., an allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 0.5 to 3 ng/ml, 0.5to 2 ng/ml, or 0.5 to 1 ng/ml.

In an embodiment a method disclosed herein comprises administering to asubject an mTOR inhibitor, e.g., an allosteric inhibitor, e.g., RAD001,at a dosage that provides a target trough level of 1 to 3 ng/ml, or 1 to2 ng/ml.

As used herein, the term “level” refers to the concentration of a drugin plasma just before the next dose, or the minimum drug concentrationbetween two doses.

In some embodiments, a target trough level of RAD001 is in a range ofbetween about 0.1 and 3 ng/ml. In an embodiment, the target trough levelis below 3 ng/ml, e.g., is between 0.3 or less and 3 ng/ml. In anembodiment, the target trough level is below 3 ng/ml, e.g., is between0.3 or less and 1 ng/ml. In some embodiments, a target trough level ofRAD001 is in a range of between about 2.4 and 3. In some embodiments, atarget trough level of RAD001 is in a range of between about 0.1 and 2.4ng/ml. In some embodiments, a target trough level of RAD001 is in arange of between about 0.1 and 1.5 ng/ml. In some embodiments, a targettrough level of RAD001 is in a range of between 0.1 and 3 ng/ml. In someembodiments, a target trough level of RAD001 is in a range of between2.4 and 3 ng/ml. In some embodiments, a target trough level of RAD001 isin a range of between 0.1 and 2.4 ng/ml. In some embodiments, a targettrough level of RAD001 is in a range of between 0.1 and 1.5 ng/ml. Insome embodiments, a target trough level of RAD001 is 0.1 ng/ml. In someembodiments, a target trough level of RAD001 is 0.2 ng/ml. In someembodiments, a target trough level of RAD001 is 0.3 ng/ml. In someembodiments, a target trough level of RAD001 is 0.4 ng/ml. In someembodiments, a target trough level of RAD001 is 0.5 ng/ml. In someembodiments, a target trough level of RAD001 is 0.6 ng/ml. In someembodiments, a target trough level of RAD001 is 0.7 ng/ml. In someembodiments, a target trough level of RAD001 is 0.8 ng/ml. In someembodiments, a target trough level of RAD001 is 0.9 ng/ml. In someembodiments, a target trough level of RAD001 is 1.0 ng/ml. In someembodiments, a target trough level of RAD001 is 1.1 ng/ml. In someembodiments, a target trough level of RAD001 is 1.2 ng/ml. In someembodiments, a target trough level of RAD001 is 1.3 ng/ml. In someembodiments, a target trough level of RAD001 is 1.4 ng/ml. In someembodiments, a target trough level of RAD001 is 1.5 ng/ml. In someembodiments, a target trough level of RAD001 is less than 3 ng/ml. Insome embodiments, a target trough level of RAD001 is less than 2.5ng/ml. In some embodiments, a target trough level of RAD001 is less than3 ng/ml, 2 ng/ml, 1.9 ng/ml, 1.8 ng/ml, 1.7 ng/ml, 1.6 ng/ml, 1.5 ng/ml,1.4 ng/ml, 1.3 ng/ml, 1.2 ng/ml, 1.1 ng/ml, 1.0 ng/ml, 0.9 ng/ml, 0.8ng/ml, 0.7 ng/ml, 0.6 ng/ml, 0.5 ng/ml, 0.4 ng/ml, 0.3 ng/ml, 0.2 ng/ml,or 0.1 ng/ml.

In a further aspect, the invention can utilize an mTOR inhibitor otherthan RAD001 in an amount that is associated with a target trough levelthat is bioequivalent to the specified target trough level for RAD001.In an embodiment, the target trough level for an mTOR inhibitor otherthan RAD001, is a level that gives the same level of mTOR inhibition(e.g., as measured by a method described herein, e.g., the inhibition ofP70 S6K) as does a trough level of RAD001 described herein.

Disorders

Cancer

The methods described herein can be used with any cancer. In anembodiment, the cancer comprises a solid tumor. In an embodiment, thecancer is a hematological cancer. The cancer can be a carcinoma, asarcoma, a myeloma, a leukemia, a lymphoma or a mixed type.

In some embodiments, the cancer is associated with elevated percentagesof PD1+ T cells in the subject. In certain embodiments, the cancer is acancer that generally responds to PD-1 targeted drugs, such as melanoma.In certain embodiments, the cancer is a cancer that generally respondsto T-cell directed immunotherapies, such as renal cell carcinoma. In anembodiment the cancer is one in which can be treated by increasing theration of PD-1 negative to PD-1 positive T cells.

Examples of cancers that can be treated with methods disclosed hereininclude bone cancer, pancreatic cancer, skin cancer, cancer of the heador neck, cutaneous or intraocular malignant melanoma, uterine cancer,ovarian cancer, rectal cancer, cancer of the anal region, stomachcancer, testicular cancer, uterine cancer, carcinoma of the fallopiantubes, carcinoma of the endometrium, carcinoma of the cervix, carcinomaof the vagina, carcinoma of the vulva, Hodgkin's Disease, non-Hodgkin'slymphoma, cancer of the esophagus, cancer of the small intestine, cancerof the endocrine system, cancer of the thyroid gland, cancer of theparathyroid gland, cancer of the adrenal gland, sarcoma of soft tissue,cancer of the urethra, cancer of the penis, chronic or acute leukemiasincluding acute myeloid leukemia, chronic myeloid leukemia, acutelymphoblastic leukemia, chronic lymphocytic leukemia, solid tumors ofchildhood, lymphocytic lymphoma, cancer of the bladder, cancer of thekidney or ureter, carcinoma of the renal pelvis, neoplasm of the centralnervous system (CNS), primary CNS lymphoma, tumor angiogenesis, spinalaxis tumor, brain stem glioma, pituitary adenoma, Kaposi's sarcoma,epidermoid cancer, squamous cell cancer, T-cell lymphoma,environmentally induced cancers including those induced by asbestos, andcombinations of said cancers.

Examples of solid tumors that can be treated with methods disclosedherein include malignancies, e.g., sarcomas, adenocarcinomas, andcarcinomas, of the various organ systems, such as those affecting liver,lung, breast, lymphoid, gastrointestinal (e.g., colon), genitourinarytract (e.g., renal, urothelial cells), prostate and pharynx.Adenocarcinomas include malignancies such as most colon cancers, rectalcancer, renal-cell carcinoma, liver cancer, non-small cell carcinoma ofthe lung, cancer of the small intestine and cancer of the esophagus. Inone embodiment, the cancer is a melanoma, e.g., an advanced stagemelanoma. Metastatic lesions of the aforementioned cancers can also betreated or prevented using the methods and compositions of theinvention.

Methods described herein can be used to treat any of the followingcancers:

Digestive/gastrointestinal cancers such as anal cancer; bile ductcancer; extrahepatic bile duct cancer; appendix cancer; carcinoid tumor,gastrointestinal cancer; colon cancer; colorectal cancer includingchildhood colorectal cancer; esophageal cancer including childhoodesophageal cancer; gallbladder cancer; gastric (stomach) cancerincluding childhood gastric (stomach) cancer; hepatocellular (liver)cancer including adult (primary) hepatocellular (liver) cancer andchildhood (primary) hepatocellular (liver) cancer; pancreatic cancerincluding childhood pancreatic cancer; sarcoma, rhabdomyosarcoma; isletcell pancreatic cancer; rectal cancer; and small intestine cancer;

Endocrine cancers such as islet cell carcinoma (endocrine pancreas);adrenocortical carcinoma including childhood adrenocortical carcinoma;gastrointestinal carcinoid tumor; parathyroid cancer; pheochromocytoma;pituitary tumor; thyroid cancer including childhood thyroid cancer;childhood multiple endocrine neoplasia syndrome; and childhood carcinoidtumor;

Eye cancers such as intraocular melanoma; and retinoblastoma;

Musculoskeletal cancers such as Ewing's family of tumors;osteosarcoma/malignant fibrous histiocytoma of the bone; childhoodrhabdomyosarcoma; soft tissue sarcoma including adult and childhood softtissue sarcoma; clear cell sarcoma of tendon sheaths; and uterinesarcoma;

Breast cancer such as breast cancer including childhood and male breastcancer and pregnancy;

Neurologic cancers such as childhood brain stem glioma; brain tumor;childhood cerebellar astrocytoma; childhood cerebralastrocytoma/malignant glioma; childhood ependymoma; childhoodmedulloblastoma; childhood pineal and supratentorial primitiveneuroectodermal tumors; childhood visual pathway and hypothalamicglioma; other childhood brain cancers; adrenocortical carcinoma; centralnervous system lymphoma, primary; childhood cerebellar astrocytoma;neuroblastoma; craniopharyngioma; spinal cord tumors; central nervoussystem atypical teratoid/rhabdoid tumor; central nervous systemembryonal tumors; and childhood supratentorial primitive neuroectodermaltumors and pituitary tumor;

Genitourinary cancers such as bladder cancer including childhood bladdercancer; renal cell (kidney) cancer; ovarian cancer including childhoodovarian cancer; ovarian epithelial cancer; ovarian low malignantpotential tumor; penile cancer; prostate cancer; renal cell cancerincluding childhood renal cell cancer; renal pelvis and ureter,transitional cell cancer; testicular cancer; urethral cancer; vaginalcancer; vulvar cancer; cervical cancer; Wilms tumor and other childhoodkidney tumors; endometrial cancer; and gestational trophoblastic tumor;

Germ cell cancers such as childhood extracranial germ cell tumor;extragonadal germ cell tumor; ovarian germ cell tumor; and testicularcancer;

Head and neck cancers such as lip and oral cavity cancer; oral cancerincluding childhood oral cancer; hypopharyngeal cancer; laryngeal cancerincluding childhood laryngeal cancer; metastatic squamous neck cancerwith occult primary; mouth cancer; nasal cavity and paranasal sinuscancer; nasopharyngeal cancer including childhood nasopharyngeal cancer;oropharyngeal cancer; parathyroid cancer; pharyngeal cancer; salivarygland cancer including childhood salivary gland cancer; throat cancer;and thyroid cancer;

Lung cancer such as non-small cell lung cancer; and small cell lungcancer;

Respiratory cancers such as malignant mesothelioma, adult; malignantmesothelioma, childhood; malignant thymoma; childhood thymoma; thymiccarcinoma; bronchial adenomas/carcinoids including childhood bronchialadenomas/carcinoids; pleuropulmonary blastoma; non-small cell lungcancer; and small cell lung cancer;

Skin cancers such as Kaposi's sarcoma; Merkel cell carcinoma; melanoma;and childhood skin cancer;

AIDS-related malignancies;

Other childhood cancers, unusual cancers of childhood and cancers ofunknown primary site;

and metastases of the aforementioned cancers can also be treated orprevented in accordance with the methods described herein.

Methods described herein can be used to treat a hematological cancer ormalignancy or precancerous condition, e.g., a leukemia or a lymphoma.The cancer can be one associated with expression of a cancer associatedantigen as described herein. Hematological cancers and malignanciesinclude, one or more acute leukemias including, e.g., B-cell acuteLymphoid Leukemia (“BALL”), T-cell acute Lymphoid Leukemia (“TALL”),acute lymphoid leukemia (or acute lymphoblastic leukemia) (ALL),including adult and childhood acute lymphoid leukemia; acute myeloidleukemia, including adult and childhood acute myeloid leukemia; one ormore chronic leukemias, e.g., chronic myelogenous leukemia (CIVIL),Chronic Lymphoid Leukemia (or chronic lymphocytic leukemia) (CLL).Additional cancers or hematologic conditions that can be treated withmethods disclosed herein include, e.g., AIDS-related lymphoma, B cellprolymphocytic leukemia, blastic plasmacytoid dendritic cell neoplasm,Burkitt's lymphoma, chronic myeloproliferative disorders; cutaneousT-cell lymphoma, diffuse large B cell lymphoma, Follicular lymphoma,Hairy cell leukemia, Hodgkin's lymphoma (including adult and childhoodHogkin's lymphoma and Hodgkin's lymphoma during pregnancy), small cell-or a large cell-follicular lymphoma, malignant lymphoproliferativeconditions, MALT lymphoma, mantle cell lymphoma, Marginal zone lymphoma,multiple myeloma, multiple myeloma/plasma cell neoplasm, myelodysplasiaand myelodysplastic syndrome, myelodysplastic/myeloproliferativedisorders, mycosis fungoides, non-Hodgkin's lymphoma (including adultand childhood non-Hodgkin's lymphoma and non-Hodkin's lymphoma duringpregnancy), plasmablastic lymphoma, plasmacytoid dendritic cellneoplasm, Sezary syndrome, Waldenstrom macroglobulinemia, primarycentral system lymphoma, and “preleukemia” which are a diversecollection of hematological conditions united by ineffective production(or dysplasia) of myeloid blood cells, and the like. Further a diseaseassociated with a cancer associated antigen as described hereinexpression include, but not limited to, e.g., atypical and/ornon-classical cancers, malignancies, precancerous conditions orproliferative diseases associated with expression of a cancer associatedantigen as described herein.

Pathogenic Infections

In another aspect, the methods provided herein can be used to treatinfection by a pathogen in a subject. In some embodiments, the pathogenis a viral pathogen, e.g., a viral pathogen e.g. HIV, meningitis causingviruses, encephalitis causing viruses, Hepatitis A, Hepatitis B,Hepatitis C, rabies virus, polio virus, influenza virus, parainfluenzavirus, adenovirus, rhinovirus, measles virus, mumps virus, rubella,pertussis, papilloma virus, yellow fever virus, respiratory syncytialvirus, parvovirus, Norwalk virus, chikungunya virus, haemorrhagic feverviruses, dengue virus, and Herpes viruses, e.g., varicella,cytomegalovirus and Epstein-Barr virus. In some embodiments, theinfection is a viral infection, such as a chronic viral infection. Insome embodiments, a chronic viral infection is selected from HepatitisA, Hepatitis B, Hepatitis C, Epstein Barr Virus, HIV, Cytomegalovirus,Herpes Simplex Virus 1, Herpes Simplex Virus 2, Human Papillomavirus,Adenovirus, and Kaposi's Sarcoma-Associated Herpesvirus. In someembodiments, a chronic viral infection comprises HIV.

For example, Lichterfeld and colleagues observed that HIV-specific CD8+T-cells showed reduced telomere length and an increase in telomerelength and telomerase activity upon inhibition of PD-1 (see e.g.,Lichterfeld, M et al. (2008) Blood 112(9):3679-3687). In anotherexample, PD-1 was significantly upregulated in hepatitis C(HVC)-specific CD8+ cytotoxic T lymphocytes (see e.g., Golden-Mason, L(2007) J. Virol. 81(17): 9249-9258).

In some embodiments, a viral infection comprises a viral acute lowerrespiratory tract infection. In some embodiments viral acute lowerrespiratory tract infection is caused by a rhinovirus, coronavirus,influenza virus, respiratory syncytial virus (RSV), adenovirus, and/orparainfluenza. In some embodiments, a viral acute lower respiratorytract infection is pnemonia. In some embodiments, a viral acute lowerrespiratory tract infection includes a lung abcess. In some embodiments,a viral acute lower respiratory tract infection includes bronchitis.

In some embodiments, the pathogen is a bacterial pathogen, e.g., abacterial pathogen selected from Meningococcus, Haemophilus,Pneumococcus, Staphylococcus, Streptococcus, Neisseria, Moraxella,Escherichia coli, Klebsiella, Pseudomonas, Enterobacter, Proteus,Serratia, Legionella, Salmonella, Shigella, Acinetobacer, Listeria,Chlamydia, Mycobacterium among others.

In some embodiments, the pathogen is a parasitic pathogen, e.g.,Toxoplasma, Leishmania and malaria, T. cruzii, Helminth, e.g.,Schistosoma.

In some embodiments, the pathogen is a yeast or fungal pathogen, e.g.,Candida, Cryptococcus or Coccidioides.

Senescence and Other Disorders

In another aspect, the methods provided herein can be used to treatsenescence in a subject. As used herein, the term “senescence” is meantto include all types of aging. In some embodiments, senescence comprisesimmunosenescence. Immunosenescence includes reduced immune response toinfection with age and results from thymic involution in T-celllineages, resulting in decreased T cell production and export (see e.g.,Shimatani, K et al. (2009) PNAS 106 (37):15807-15812). In someembodiments, there is an increase in population of a bona fideage-dependent CD4+ T cell population defined by a constitutiveexpression of PD-1, which is induced only transiently on activation inregular T cells and, therefore, reduced immune response to infection(see e.g., Shimatani, K et al. (2009) PNAS 106 (37):15807-15812). Insome embodiments, there is in increase in population of CD8+ T cellpopulation defined by increased expression of PD-1 uponreceptor-mediated activation of CD8+ T cells (see e.g., Nunes, C et al.(2012) Clinical Cancer Research 18(3):678-687). In some embodiments,senescence comprises cellular senescence, in which a cell no longerdivides. In some embodiments, age-related immunosenescence comprisesdecreased production of naive lymphocytes by hematopoietic stem cells(Chen, Science Signaling, ra75, 2009). Cellular senescence is correlatedwith the progressive shortening of telomeres that occurs with each celldivision.

The term “age-related condition” refers to any disease, disorder, orpathology whose incidence in a population or severity in an individualcorrelates with the progression of age. More specifically, anage-related condition is a disease, disorder, or pathology whoseincidence is at least 1.5 fold higher among human individuals greaterthan 60 years of age relative to human individuals between the ages of30-40 and in a selected population of greater than 100,000 individuals.In one aspect, the invention relates to the treatment of conditionsincluding, but not limited to sarcopenia, skin atrophy, muscle wasting,brain atrophy, atherosclerosis, arteriosclerosis, pulmonary emphysema,osteoporosis, osteoarthritis, high blood pressure, erectile dysfunction,dementia, Huntington's disease, Alzheimer's disease, cataracts,age-related macular degeneration, prostate cancer, stroke, diminishedlife expectancy, impaired kidney function, and age-related hearing loss,aging-related mobility disability (e.g., frailty), cognitive decline,age-related dementia, memory impairment, tendon stiffness, heartdysfunction such as cardiac hypertrophy and systolic and diastolicdysfunction, immunosenescence, cancer, obesity, and diabetes.

Antigens and Vaccines

The mTOR inhibitors, such as RAD001, described herein can be used incombination with an antigen to enhance an immune response to the antigenin a subject. The antigens selected for the methods and compositions ofthe invention are not a limitation on this invention. The antigen maybe, without limitation, a whole cell, a virus, a protein, a proteinsubunit or fragment. Examples of viral antigens which may be enhanced byadministration with an mTOR inhibitor, include, without limitation,those derived from and/or useful in treatment or prevention of HIV,meningitis and encephalitis-causing viruses, Hepatitis A, Hepatitis B,Hepatitis C, rabies virus, polio virus, influenza virus, measles virus,mumps virus, rubella, pertussis, papilloma virus, yellow fever virus,respiratory syncytial virus, parvovirus, chikungunya virus, haemorrhagicfever viruses, and Herpes viruses, particularly, varicella,cytomegalovirus and Epstein-Barr virus. Examples of bacterial andmycobacterial antigens include those derived from and/or useful againstmeningococcus, haemophilus, pneumococcus, staphylococcus, leprosy andtuberculosis among others. Examples of parasitic antigens include thosederived from and/or useful against such infections as toxoplasmosis,leishmaniasis and malaria. Still other composition antigens includethose derived from a protozoan, e.g., T. cruzii, or against a helminth,e.g., Schistosoma. Still other antigens useful in the methods describedherein include those derived from yeast or fungus such as Cryptococcusor Coccidioides. Still other antigens useful in the methods describedherein include those derived from pathologic tissues such as tumors.

In particular an mTOR inhibitor such as RAD001 can be used incombination with a vaccine against a viral or pathogenic agent, such asan influenza vaccine, pneumococcal vaccine, or HIV vaccine. Morespecifically, an mTOR inhibitor can be used as described herein toenhance the immune response to, or adjuvant a vaccine for any influenzastrain, such as H1N1, H2N3, and B influenza subtypes.

It is further anticipated that an mTOR inhibitor can be used as anadjuvant in therapeutic vaccines for certain cancers and solid tumors,and infectious diseases including, without limitation, malaria, HIV, andinfluenza. Such a therapeutic vaccine is used in a manner similar tothat disclosed above for its use as an adjuvant for vaccines containingantigens of a pathogenic microorganism or virus. Particularly where thetumor antigen by itself has been unsuccessful in activating a responseto a particular cancer, the use of an mTOR inhibitor as an adjuvant in acancer vaccine or therapeutic is encompassed by the present invention.Cancer vaccines typically include an antigen expressed on and isolatedfrom a cancer cell or a cancer cell transfected with, and capable ofexpressing, a selected antigen. For example, any purified tumor antigenmay be co-administered with an mTOR inhibitor such as RAD001 asdescribed above for pathogenic vaccines. Identification of relevantcancer antigens will permit the development of such vaccines.Alternatively, other cancer therapeutics are designed using an antigennormally not expressed on a cancer cell. For example, a selected antigenmay be transfected into the cancer cell and the transfected cell itself,expressing the antigen, is used as the vaccine or therapeutic.

The ability of an mTOR inhibitor to provide an adjuvant effect in avaccine or to enhance an immune response to an antigen, such as avaccine antigen (e.g., influenza) can be measured using methods wellknown in the art, such as, but not limited to an ELISA assay and ahemagglutination inhibition assay (See, e.g., Lee et al. Pediatr InfectDis J. 2004 September; 23(9):852-6). Typically, the enhancement of animmune response to an antigen by an mTOR inhibitor can be determined bymeasuring titers of antibodies against the antigen in the subject,wherein an increase in the titer of antibodies directed against theparticular antigen is indicative of the mTOR inhibitor having enhancedthe immune response to the antigen.

When used as a vaccine adjuvant for a selected antigen, or when usedaccording to the methods described herein, an mTOR inhibitor may beadmixed as part of the antigen-containing composition itself. Such acomposition is desirably a vaccine composition which contains a suitablecarrier and, optionally, other desired components. Selection ofappropriate carriers, e.g., phosphate buffered saline and the like, arewell within the skill of those in the art. Similarly, one skilled in theart may readily select appropriate stabilizers, preservatives, and thelike for inclusion in the composition. Any route of administration knownin the art may be employed for the administration of an antigen orvaccine, e.g., subcutaneous, intraperitoneal, oral, intramuscular,intranasal and the like.

Alternatively, the immunostimulatory effect of an mTOR inhibitor may beobtained by administering the mTOR inhibitor separately from the vaccinecomposition. When separately administered, the mTOR inhibitor can beadministered in a formulation as described hereinabove. The mTORinhibitor may be administered contemporaneously with the vaccinecomposition, either simultaneously therewith, or before or after thevaccine antigen administration. If the mTOR inhibitor is administeredbefore the vaccine composition, it is desirable to administer it one ormore days before the vaccine. In one aspect, the mTOR inhibitor can beadministered for a period of time prior to administration of theantigen. For example, the mTOR inhibitor can be administered for 1-7days prior to administration of the vaccine, one week, two weeks, threeweeks, four weeks, five weeks, or six weeks or more prior toadministration of the antigen. In one aspect, the antigen isadministered immediately following administration of the mTOR inhibitor.In another aspect, there can be a period of time between administrationof the mTOR inhibitor and administration of the antigen. For example,the antigen may be administered 1-7 days following administration of themTOR inhibitor, or can be administered one week, two weeks, three weeksor more following administration of the mTOR inhibitor. In one aspect,the mTOR inhibitor is administered to a subject for six weeks, followedby a two week period in which the subject is given neither mTORinhibitor or antigen, followed by administration of the antigen. Whenthe mTOR inhibitor is administered as a separate component from thevaccine, it is can be administered by the same route of administrationas the vaccine antigen, or it may be administered by a different route,or any other route as selected by a physician. In a further aspect ofthe foregoing dosing schedules, administration of the mTOR inhibitor cancontinue after administration of the antigen. For example, whetheradministered prior to, or at the same time as the antigen, the mTORinhibitor can continue to be administered on a weekly or daily dosingschedule as described herein for 1, 2, 3, 4, 5, 6, or 7 or more daysfollowing administration of the antigen. The mTOR inhibitor can continueto be administered for 1, 2, 3, 4, 5, or 6 weeks or more followingadministration of the antigen.

Other Methods Utilizing mTOR Inhibitors

In one aspect, the present invention relates to the use of low doses ofan mTOR inhibitor in a method of enhancing an immune response to anantigen in a subject. In one aspect, the immune response to the antigenis enhanced by 1.2 fold when antigen exposure is combined with a lowdose of an mTOR inhibitor. In a further aspect, the immune response tothe antigen is enhanced by 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3,1.4, or 1.5 or greater when antigen exposure is combined with a low,immune enhancing, dose of an mTOR inhibitor as described herein. In afurther aspect the mTOR inhibitor is an mTOR inhibitor described herein,e.g., RAD001, and is administered at a dose described herein, e.g., adose of 0.005-1.5 mg daily, 0.01-1 mg daily, 0.01-0.7 mg daily, 0.01-0.5mg daily, or 0.1-0.5 mg daily or 0.1-20 mg weekly, 0.5-15 mg weekly,1-10 mg weekly, or 3-7 mg weekly. In one aspect, the mTOR inhibitorRAD001 is administered at a dose of 0.5 mg daily or 5 mg weekly. In eachof the foregoing aspects, an mTOR inhibitor other than RAD001 can beadministered at a bioequivalent dose.

In a further aspect, the invention relates to methods for enhancing theimmune response to an antigen by administering an amount of an mTORinhibitor sufficient to inhibit P70 S6 kinase by an amount describedherein, e.g., by no greater than 80%. In a further aspect, the mTORinhibitor is sufficient to inhibit P70 S6 kinase by no greater than 38%.In one aspect, the mTOR inhibitor is RAD001, rapamycin, a rapalog, orother mTOR inhibitor known in the art, such as Ridaforolimus,emsirolimus. In a further aspect the mTOR inhibitor may be a combinationof two or more mTOR inhibitors. The method includes the steps ofadministering to a subject an antigen, such as, for example, a vaccine(e.g., influenza vaccine) and an mTOR inhibitor such as RAD001.

In one aspect, the antigen is a vaccine antigen, and can include, forexample, influenza, pneumococcus, HIV, or other vaccine antigens. Inparticular, the vaccine antigen can be an influenza antigen such asH1N1, H2N3, and B influenza subtypes.

The present method of enhancing an immune response to an antigenencompasses a method in which the immune response to an antigen in asubject is increased. That is, where as a result of the inclusion of anmTOR inhibitor with administration of the antigen, there is an increasein protective immunity following exposure to the antigen, whereprotective immunity refers to the presence of sufficient antibody titersto protect against subsequent infection by the same antigen. Inaddition, an enhanced immune response to an antigen in response totreatment with an mTOR inhibitor can mean that in a population, there isan increase in the percentage of individuals that have protectiveimmunity after exposure to an antigen such as a vaccine.

In one aspect, an indicator of a suppressed or impaired immunefunction/response is a reduced number of lymphocytes or reducedlymphocyte function, such as a reduced response to mitogenicstimulation. A human immune system can also be considered to be impairedwhen (1) the ratio of Th/Ts is less than about 1.0, (2) when thestimulation index to ConA is approximately 50% less than “normal” or (2)when the stimulation index to PHA is approximately 50% less than“normal” (See, e.g., EP0507872). A human immune system can also beconsidered impaired when antigen presentation and/or lymphocyteactivation by macrophages and dendritic cells is below what is seen incells derived from a healthy person less than 40 years of age, when theresponse of lymphocytes to activating signals is less than what is seenin lymphoctyes derived from a healthy person less than 40 years of age,when the secretion of inflammatory cytokines is above what is seen in ahealthy person less than 40 years of age, when lymphopoiesis byhematopoietic stem cells is below that of hematopoietic stem cells froma person less than 40 years of age, or when the percentage of PD1+CD4+and/or CD8+ T cells is above the percentage of PD1+CD4+ and/or CD8+ Tcells in a person less than 40 years of age.

An impaired human immune response is frequently observed as a secondaryeffect of such conditions as trauma, for example, from an accident orfrom undergoing a major surgical procedure, from a debilitating disease,such as cancer or infection with the HIV virus (AIDS), or frommalnutrition or old age. As a result of an impaired immune response,patients are unable to respond to and eliminate infectious agents, suchas bacteria, viruses, and fungi, from their bodies.

In one aspect the method of enhancing an immune response in a subjectalso includes the step of first identifying a subject with an impairedimmune response. A subject with an impaired immune response refers to asubject that is predicted not to get protective antibody titer levelsfollowing prophylactic vaccination, or in which a subject does not havea decrease in disease burden after therapeutic vaccination. Methods fordetermining antibody titers following vaccination and/or measuringdisease burden are well known in the art and may be routinely performedby a physician or other medical professional.

For example, titer of an anti-influenza virus antibody can be measuredby hemagglutination inhibition (HI) assay. The HI assay can be performedas described in Kendal, A P et al. (1982) Concenpts and procedures forlaboratory-based influenza surveillance. Atlanta: Centers for DiseaseControl and Prevention B17-B35 and below. A constant amount ofhemagglutinating antigen (HA) is added to each well of a microtiterplate. A test sample, e.g., serum of a patient, is added to the firstwell and serially diluted, e.g., two-fold, to desired dilution or numberof wells. RBCs are added to each well. The plate is incubated for anamount of time sufficient for hemagglutination to occur, e.g., 1 hour.The plate is then observed for wells with agglutinated RBCs (indicatingthat there is insufficient antibody present to prevent hemagglutination)or unagglutinated RBCs (indicating that there is sufficient antibodypresent to prevent hemagglutination). The highest dilution of testsample required to prevent hemagglutination indicates the HI titer.

A subject can also be said to have an impaired immune response if thesubject is a member of a population known to have decreased immunefunction such as the elderly, subjects undergoing immunosuppressive orchemotherapy treatment, asplenic subjects, immunocompromised subjects,or subjects having HIV/AIDS. That is, a subject can be predicted to havean impaired immune response based on their inclusion in a class ofsubjects typically associated with impaired immune function. Suchindividuals may be deemed to have impaired immune response withoutspecific testing, or following confirmation of an impaired immuneresponse using methods routine in the art. In addition a subject may bedeemed to have an impaired immune response if that subject has a historyof decreased immune function, such as a history of an inability toestablish protective immunity after vaccination or exposure to anantigen.

Once a subject is identified as having an impaired immune response, thesubject can be treated with an mTOR inhibitor in the context ofvaccination and/or exposure to antigen as described herein.

In addition, in a further aspect, the invention relates to methods fortreating immunosenescence in a subject by administering to the subjectan amount of an mTOR inhibitor effective to increase the immune responseto an antigen (e.g., a vaccine antigen) so that protective antibodytiters or T cell response to the antigen are achieved. In one aspect,the invention provides a method for treating immunosenescence in asubject by administering low doses of an mTOR inhibitor such as RAD001.The mTOR inhibitor RAD001 can administered at a dose described herein,e.g., a dose of about 0.005-1.5 mg daily, about 0.01-1 mg daily, about0.01-0.7 mg daily, about 0.01-0.5 mg daily, or about 0.1-0.5 mg daily orabout 0.1-20 mg weekly, about 0.5-15 mg weekly, about 1-10 mg weekly, orabout 3-7 mg weekly. In one aspect, RAD001 is administered at a dose of0.5 mg daily or 5 mg weekly. In a further embodiment of the foregoing,the mTOR inhibitor can be an inhibitor other than RAD001 administered ata dose that is bioequivalent to the doses of RAD001 indicated above. Ina further aspect, the invention relates to methods of treatingimmunosenescence in a subject by administering an amount of an mTORinhibitor sufficient to inhibit P70 S6 kinase by no greater than 80%. Ina further aspect, the mTOR inhibitor is sufficient to inhibit P70 S6kinase by no greater than 38%. In one aspect, the mTOR inhibitor isRAD001, rapamycin, a rapalog, or other mTOR inhibitor known in the art.In a further aspect the mTOR inhibitor may be a combination of two ormore mTOR inhibitors.

Immunosenescence refers to a decrease in immune function associated withage resulting in impaired response to vaccination and infectiouspathogens. It involves both the host's capacity to respond to infectionsand the development of long-term immune memory, especially byvaccination. This age-associated immune deficiency is ubiquitous andfound in both long- and short-lived species as a function of their agerelative to life expectancy rather than chronological time. It isconsidered a major contributory factor to the increased frequency ofmorbidity and mortality among the elderly. Immunosenescence is not arandom deteriorative phenomenon, rather it appears to inversely repeatan evolutionary pattern and most of the parameters affected byimmunosenescence appear to be under genetic control. Immunosenescencecan also be sometimes envisaged as the result of the continuouschallenge of the unavoidable exposure to a variety of antigens such asviruses and bacteria. Immunosenescence is a multifactorial conditionleading to many pathologically significant health problems in the agedpopulation. Age-dependent biological changes such as depletion ofhematopoietic stem cells, decline in the total number of phagocytes andNK cells and a decline in humoral immunity contribute to the onset ofimmunosenescence and may be used as indicators of the onset or presenceof immunosenescence. In one aspect, immunosenescence can be measured inan individual by measuring telomere length in immune cells (See, e.g.,U.S. Pat. No. 5,741,677). Immunosenescence can also be measured in anindividual by measuring the number of naïve CD4 and/or CD8 T cells, bymeasuring T cell repertoire, by measuring percentage of PD1+CD4 and CD8T cells, or by measuring the response to vaccination in a subject overthe age of 65. In a further aspect, the invention relates to methods forthe treatment of an age related condition in a subject by administeringto the subject the mTOR inhibitor RAD001 at a dose of about 0.005-1.5 mgdaily, about 0.01-1 mg daily, about 0.01-0.7 mg daily, about 0.01-0.5 mgdaily, or about 0.1-0.5 mg daily or about 0.1-20 mg weekly, about 0.5-15mg weekly, about 1-10 mg weekly, or about 3-7 mg weekly. In one aspect,the mTOR inhibitor is administered at a dose of about 0.5 mg daily orabout 5 mg weekly. In one aspect the mTOR inhibitor can be an mTORinhibitor other than RAD001 administered at a dose that is bioequivalentto the specified doses of RAD001. In a further aspect, the inventionrelates to a method of treating an age related condition in a subject byadministering an amount of an mTOR inhibitor sufficient to inhibit P70S6 kinase by no greater than 80%. In a further aspect, the mTORinhibitor is sufficient to inhibit P70 S6 kinase by no greater than 38%.In one aspect, the mTOR inhibitor is RAD001, rapamycin, a rapalog, orother mTOR inhibitor known in the art. In a further aspect the mTORinhibitor may be a combination of two or more mTOR inhibitors.

An age-related condition can be any disease, disorder, or pathologywhose incidence in a population or severity in an individual correlateswith the progression of age. More specifically, an age-related conditionis a disease, disorder, or pathology whose incidence is at least 1.5fold higher among human individuals greater than 60 years of agerelative to human individuals between the ages of 30-40 and in aselected population of greater than 100,000 individuals. Age-relatedconditions relevant to the present invention include, but are notlimited to sarcopenia, skin atrophy, muscle wasting, brain atrophy,atherosclerosis, arteriosclerosis, pulmonary emphysema, osteoporosis,osteoarthritis, high blood pressure, erectile dysfunction, dementia,Huntington's disease, Alzheimer's disease, cataracts, age-relatedmacular degeneration, prostate cancer, stroke, diminished lifeexpectancy, impaired kidney function, and age-related hearing loss,aging-related mobility disability (e.g., frailty), cognitive decline,age-related dementia, memory impairment, tendon stiffness, heartdysfunction such as cardiac hypertrophy andsystolic and diastolicdysfunction, immunosenescence, cancer, and diabetes.

The treatment of an age-related condition using the mTOR inhibitorsdescribed herein may be complete, e.g., the total absence of anage-related condition or metabolic disorder. The prevention may also bepartial, such that the likelihood of the occurrence of the age-relatedcondition or metabolic disorder in a subject is less likely to occurthan had the subject not received an mTOR inhibitor of the presentdisclosure. Methods for measuring the effectiveness of an mTOR inhibitorin the treatment of an age-related condition described herein are knownin the art and examples of such methods may be found in U.S. Pat. No.8,420,088.

Combination Treatments

In some embodiments, it may be advantageous to administer an mTORinhibitor, e.g., an mTOR inhibitor described herein, at a low, immuneenhancing, dose with one or more therapeutic agents (pharmaceuticalcombinations). For example, synergistic effects can occur with otherimmunostimulatory, anti-infective, anti-tumor or anti-proliferativeagents, for example, mitotic inhibitors, alkylating agents,anti-metabolites, intercalating antibiotics, growth factor inhibitors(e.g., trastuzumab, panitumumab, cetuximab, gefitinib, erlotinib,lapatinib, sorafenib, etc.), cell cycle inhibitors, enzymes,topoisomerase inhibitors, biological response modifiers, antibodies,cytotoxics, bronchodilators, anti-hormones, anti-androgens, ananti-angiogenesis agent, kinase inhibitor, pan kinase inhibitor orgrowth factor inhibitor. Other suitable therapeutic agents are listed inthe Physicians' Desk Reference. Where the compounds of the invention areadministered in conjunction with other therapies, dosages of theco-administered compounds will of course vary depending on the type ofco-drug employed, on the specific drug employed, on the condition beingtreated and so forth.

Accordingly, an mTOR inhibitor, e.g., an mTOR inhibitor describedherein, may be used at low, immune enhancing, dose in combination withother known agents and therapies. Administered “in combination”, as usedherein, means that two (or more) different treatments are delivered tothe subject during the course of the subject's affliction with thedisorder, e.g., the two or more treatments are delivered after thesubject has been diagnosed with the disorder and before the disorder hasbeen cured or eliminated or treatment has ceased for other reasons. Insome embodiments, the delivery of one treatment is still occurring whenthe delivery of the second begins, so that there is overlap in terms ofadministration. This is sometimes referred to herein as “simultaneous”or “concurrent delivery”. In other embodiments, the delivery of onetreatment ends before the delivery of the other treatment begins. Insome embodiments of either case, the treatment is more effective becauseof combined administration. For example, the second treatment is moreeffective, e.g., an equivalent effect is seen with less of the secondtreatment, or the second treatment reduces symptoms to a greater extent,than would be seen if the second treatment were administered in theabsence of the first treatment, or the analogous situation is seen withthe first treatment. In some embodiments, delivery is such that thereduction in a symptom, or other parameter related to the disorder isgreater than what would be observed with one treatment delivered in theabsence of the other. The effect of the two treatments can be partiallyadditive, wholly additive, or greater than additive. The delivery can besuch that an effect of the first treatment delivered is still detectablewhen the second is delivered.

An mTOR inhibitor, e.g., an mTOR inhibitor described herein, at low,immune enhancing, dose, and the at least one additional therapeuticagent can be administered simultaneously, in the same or in separatecompositions, or sequentially. For sequential administration, the mTORinhibitor can be administered first, and the additional agent can beadministered second, or the order of administration can be reversed. Insome embodiments, the mTOR inhibitor is administered as a pretreatment,e.g., 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks, 6 weeks, 7 weeks, 8weeks, 9 weeks, 10 weeks, 11 weeks, 12 weeks or more, before treatmentwith the at least one additional therapeutic agent.

In some embodiments, an mTOR inhibitor, e.g., an mTOR inhibitordescribed herein, is administered at low, immune enhancing, dose to asubject who has cancer, e.g., a cancer described herein. The subject mayreceive treatment with an additional therapeutic agent, such as anapproved drug for that type of cancer, in combination with the mTORinhibitor. For example, Table 1 below provides a list of various cancersand their approved treatments.

TABLE 1 Cancers and Approved Treatment(s) Cancer Treatment(s) AcuteLymphoblastic Abitrexate (Methotrexate); Adriamycin PFS (DoxorubicinLeukemia Hydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride);Arranon (Nelarabine); Asparaginase Erwinia chrysanthemi; Cerubidine(Daunorubicin Hydrochloride); Clafen (Cyclophosphamide); Clofarabine;Clofarex (Clofarabine); Clolar (Clofarabine); Cyclophosphamide;Cytarabine; Cytosar-U (Cytarabine); Cytoxan (Cyclophosphamide);Dasatinib; Daunorubicin Hydrochloride; Doxorubicin Hydrochloride;Erwinaze (Asparaginase Erwinia Chrysanthemi); Folex (Methotrexate);Folex PFS (Methotrexate); Gleevec (Imatinib Mesylate); Iclusig(Ponatinib Hydrochloride); Imatinib Mesylate; Marqibo (VincristineSulfate Liposome); Mercaptopurine; Methotrexate; Methotrexate LPF(Methorexate); Mexate (Methotrexate); Mexate-AQ (Methotrexate);Nelarabine; Neosar (Cyclophosphamide); Oncaspar (Pegaspargase);Pegaspargase; Purinethol (Mercaptopurine); Purixan (Mercaptopurine);Rubidomycin (Daunorubicin Hydrochloride); Sprycel (Dasatinib); TarabinePFS (Cytarabine); Vincasar PFS (Vincristine Sulfate); VincristineSulfate; or Vincristine Sulfate Liposome. DRUG COMBINATIONS hyper-CVAD:Cyclophosphamide; Vincristine Sulfate; Doxorubicin Hydrochloride(Adriamycin); Dexamethasone. Acute Myeloid Adriamycin PFS (DoxorubicinHydrochloride); Adriamycin Leukemia RDF (Doxorubicin Hydrochloride);Arsenic Trioxide; Cerubidine (Daunorubicin Hydrochloride); Clafen(Cyclophosphamide); Cyclophosphamide; Cytarabine; Cytosar-U(Cytarabine); Cytoxan (Cyclophosphamide); Daunorubicin Hydrochloride;Doxorubicin Hydrochloride; Neosar (Cyclophosphamide); Rubidomycin(Daunorubicin Hydrochloride); Tarabine PFS (Cytarabine); Trisenox(Arsenic Trioxide); Vincasar PFS (Vincristine Sulfate); or VincristineSulfate. DRUG COMBINATIONS ADE: Cytarabine; Daunorubicin Hydrochloride;and Etoposide. AIDS-Related Kaposi Dox-SL (Doxorubicin HydrochlorideLiposome); Doxil Sarcoma (Doxorubicin Hydrochloride Liposome);Doxorubicin Hydrochloride Liposome; Evacet (Doxorubicin HydrochlorideLiposome); Intron A (Recombinant Interferon Alfa-2b); LipoDox(Doxorubicin Hydrochloride Liposome); Paclitaxel; Recombinant InterferonAlfa-2b; Taxol (Paclitaxel); Velban (Vinblastine Sulfate); Velsar(Vinblastine Sulfate); or Vinblastine Sulfate. Basal Cell CarcinomaAdrucil (Fluorouracil); Aldara (Imiquimod); Efudex (Fluorouracil);Erivedge (Vismodegib); Fluoroplex (Fluorouracil); Fluorouracil;Imiquimod; or Vismodegib. Bladder Cancer Adriamycin PFS (DoxorubicinHydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride); Cisplatin;Doxorubicin Hydrochloride; Platinol (Cisplatin); or Platinol-AQ(Cisplatin). Bone Cancer Abitrexate (Methotrexate); Adriamycin PFS(Doxorubicin Hydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride);Doxorubicin Hydrochloride; Folex (Methotrexate); Folex PFS(Methotrexate); Methotrexate; Methotrexate LPF (Methotrexate); Mexate(Methotrexate); or Mexate-AQ (Methotrexate). Brain Tumor Afinitor(Everolimus); Afinitor Disperz (Everolimus); Avastin (Bevacizumab);Bevacizumab; CeeNu (Lomustine); Everolimus; Lomustine; Methazolastone(Temozolomide); Temodar (Temozolomide); or Temozolomide. Breast CancerAbitrexate (Methotrexate); Abraxane (Paclitaxel Albumin- stabilizedNanoparticle Formulation); Ado-Trastuzumab Emtansine; Adriamycin PFS(Doxorubicin Hydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride);Adrucil (Fluorouracil); Afinitor (Everolimus); Anastrozole; Aredia(Pamidronate Disodium); Arimidex (Anastrozole); Aromasin (Exemestane);Capecitabine; Clafen (Cyclophosphamide); Cyclophosphamide; Cytoxan(Cyclophosphamide); Docetaxel; Doxorubicin Hydrochloride; Efudex(Fluorouracil); Ellence (Epirubicin Hydrochloride); EpirubicinHydrochloride; Everolimus; Exemestane; Fareston (Toremifene); Faslodex(Fulvestrant); Femara (Letrozole); Fluoroplex (Fluorouracil);Fluorouracil; Folex (Methotrexate); Folex PFS (Methotrexate);Fulvestrant; Gemcitabine Hydrochloride; Gemzar (GemcitabineHydrochloride); Goserelin Acetate; Herceptin (Trastuzumab); Ixabepilone;Ixempra (Ixabepilone); Kadcyla (Ado-Trastuzumab Emtansine); LapatinibDitosylate; Letrozole; Megace (Megestrol Acetate); Megestrol Acetate;Methotrexate; Methotrexate LPF (Methotrexate); Mexate (Methotrexate);Mexate-AQ (Methotrexate); Neosar (Cyclophosphamide); Nolvadex (TamoxifenCitrate); Novaldex (Tamoxifen Citrate); Paclitaxel; Paclitaxel Albumin-stabilized Nanoparticle Formulation; Pamidronate Disodium; Perjeta(Pertuzumab); Pertuzumab; Tamoxifen Citrate; Taxol (Paclitaxel);Taxotere (Docetaxel); Trastuzumab; Toremifene; Tykerb (LapatinibDitosylate); Xeloda (Capecitabine); or Zoladex (Goserelin Acetate). DRUGCOMBINATIONS AC: Doxorubicin Hydrochloride (Adriamycin) andCyclophosphamide. AC-T: Doxorubicin Hydrochloride (Adriamycin);Cyclophosphamide; and Paclitaxel (Taxol). CAF: Cyclophosphamide;Doxorubicin Hydrochloride (Adriamycin); and Fluorouracil. CMF:Cyclophosphamide; Methotrexate; and Fluorouracil. FEC: Fluorouracil;Epirubicin Hydrochloride; and Cyclophosphamide. TAC: Docetaxel(Taxotere); Doxorubicin Hydrochloride (Adriamycin); andCyclophosphamide. Cervical Cancer Blenoxane (Bleomycin); Bleomycin;Cisplatin; Hycamtin (Topotecan Hydrochloride); Platinol (Cisplatin);Platinol-AQ (Cisplatin); or Topotecan Hydrochloride. DRUG COMBINATIONSGemcitabine-Cisplatin: Gemcitabine Hydrochloride and Cisplatin. ChronicLymphocytic Alemtuzumab; Ambochlorin (Chlorambucil); Amboclorin Leukemia(Chlorambucil); Arzerra (Ofatumumab); Bendamustine Hydrochloride;Campath (Alemtuzumab); Chlorambucil; Clafen (Cyclophosphamide);Cyclophosphamide; Cytoxan (Cyclophosphamide); Fludara (FludarabinePhosphate); Fludarabine Phosphate; Gazyva (Obinutuzumab); Ibrutinib;Imbruvica (Ibrutinib); Leukeran (Chlorambucil); Linfolizin(Chlorambucil); Neosar (Cyclophosphamide); Obinutuzumab; Ofatumumab; orTreanda (Bendamustine Hydrochloride). DRUG COMBINATIONSCHLORAMBUCIL-PREDNISONE: Chlorambucil and Prednisone. CVP:Cyclophosphamide; Vincristine Sulfate; and Prednisone. ChronicMyelogenous Bosulif (Bosutinib); Bosutinib; Busulfan; Busulfex(Busulfan); Leukemia Clafen; Cyclophosphamide); Cyclophosphamide;Cytarabine; Cytosar-U (Cytarabine); Cytoxan (Cyclophosphamide);Dasatinib; Gleevec (Imatinib Mesylate); Iclusig (PonatinibHydrochloride); Imatinib Mesylate; Myleran (Busulfan); Neosar(Cyclophosphamide); Nilotinib; Omacetaxine Mepesuccinate; PonatinibHydrochloride; Sprycel (Dasatinib); Synribo (Omacetaxine Mepesuccinate);Tarabine PFS (Cytarabine); or Tasigna (Nilotinib). Colon Cancer Adrucil(Fluorouracil); Avastin (Bevacizumab); Bevacizumab; Camptosar(Irinotecan Hydrochloride); Capecitabine; Cetuximab; Efudex(Fluorouracil); Eloxatin (Oxaliplatin); Erbitux (Cetuximab); Fluoroplex(Fluorouracil); Fluorouracil; Irinotecan Hydrochloride; LeucovorinCalcium; Oxaliplatin; Panitumumab; Regorafenib; Stivarga (Regorafenib);Vectibix (Panitumumab); Wellcovorin (Leucovorin Calcium); Xeloda(Capecitabine); Zaltrap (Ziv-Aflibercept); or Ziv-Aflibercept. DRUGCOMBINATIONS CAPOX: Capecitabine and Oxaliplatin. FOLFIRI: LeucovorinCalcium (Folinic Acid); Fluorouracil; and Irinotecan Hydrochloride.FOLFIRI-BEVACIZUMAB: Leucovorin Calcium (Folinic Acid); Fluorouracil;Irinotecan Hydrochloride; and Bevacizumab. FOLFIRI-CETUXIMAB: LeucovorinCalcium (Folinic Acid); Fluorouracil; Irinotecan Hydrochloride; andCetuximab. FOLFOX: Leucovorin Calcium (Folinic Acid); Fluorouracil; andOxaliplatin. XELOX: Capecitabine (Xeloda) and Oxaliplatin. EndometrialCancer Megace (Megestrol Acetate) or Megestrol Acetate. Gastric(Stomach) Adriamycin PFS (Doxorubicin Hydrochloride); Adriamycin CancerRDF (Doxorubicin Hydrochloride); Adrucil (Fluorouracil); Cyramza(Ramucirumab); Docetaxel; Doxorubicin Hydrochloride; Efudex(Fluorouracil); Fluoroplex (Fluorouracil); Fluorouracil; Herceptin(Trastuzumab); Mitomycin C; Mitozytrex (Mitomycin C); Mutamycin(Mitomycin C); Ramucirumab; Taxotere (Docetaxel); or Trastuzumab.Gastrointestinal stromal Gleevec (Imatinib Mesylate); Imatinib Mesylate;Regorafenib; tumors Stivarga (Regorafenib); Sunitinib Malate; Sutent(Sunitinib Malate) Head and neck cancer Abitrexate (Methotrexate);Adrucil (Fluorouracil); Blenoxane (Bleomycin); Bleomycin; Cetuximab;Cisplatin; Docetaxel; Efudex (Fluorouracil); Erbitux (Cetuximab);Fluoroplex (Fluorouracil); Fluorouracil; Folex (Methotrexate); Folex PFS(Methotrexate); Methotrexate; Methotrexate LPF (Methotrexate); Mexate(Methotrexate); Mexate-AQ (Methotrexate); Platinol (Cisplatin);Platinol-AQ (Cisplatin); or Taxotere (Docetaxel). Hodkin LymphomaAdcetris (Brentuximab Vedotin); Adriamycin PFS (DoxorubicinHydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride); Ambochlorin(Chlorambucil); Amboclorin (Chlorambucil); Blenoxane (Bleomycin);Bleomycin; Brentuximab Vedotin; Chlorambucil; Clafen (Cyclophosphamide);Cyclophosphamide; Cytoxan (Cyclophosphamide); Dacarbazine; DoxorubicinHydrochloride; DTIC-Dome (Dacarbazine); Leukeran (Chlorambucil);Linfolizin (Chlorambucil); Lomustine; Matulane (ProcarbazineHydrochloride); Neosar (Cyclophosphamide); Procarbazine Hydrochloride;Velban (Vinblastine Sulfate); Velsar (Vinblastine Sulfate); VinblastineSulfate; Vincasar PFS (Vincristine Sulfate); or Vincristine Sulfate.DRUG COMBINATIONS: ABVD: Doxorubicin Hydrochloride (Adriamycin);Bleomycin; Vinblastine Sulfate; and Dacarbazine. ABVE: DoxorubicinHydrochloride (Adriamycin); Bleomycin; Vinblastine Sulfate; andEtoposide. ABVE-PC: Doxorubicin Hydrochloride (Adriamycin); Bleomycin;Vinblastine Sulfate; Etoposide; Prednisone; and Cyclophosphamide.BEACOPP: Bleomycin; Etoposide; Doxorubicin Hydrochloride (Adriamycin);Cyclophosphamide; Vincristine Sulfate (Oncovin); ProcarbazineHydrochloride; and Prednisone. COPP: Cyclophosphamide; VincristineSulfate (Oncovin); Procarbazine Hydrochloride; and Prednisone. COPP-ABV:Cyclophosphamide; Vincristine Sulfate (Oncovin); ProcarbazineHydrochloride; Prednisone; Doxorubicin Hydrochloride (Adriamycin);Bleomycin; and Vinblastine Sulfate. ICE: Ifosfamide; Carboplatin; andEtoposide. MOPP: Mechlorethamine Hydrochloride; Vincristine Sulfate(Oncovin); Procarbazine Hydrochloride; and Prednisone. OEPA: VincristineSulfate (Oncovin); Etoposide; Prednisone; and Doxorubicin Hydrochloride(Adriamycin). OPPA: Vincristine Sulfate (Oncovin); ProcarbazineHydrochloride; Prednisone; and Doxorubicin Hydrochloride (Adriamycin).STANFORD V: Mechlorethamine Hydrochloride; Doxorubicin Hydrochloride;Vinblastine Sulfate; Vincristine Sulfate; Bleomycin; Etoposide; andPrednisone. VAMP: Vincristine Sulfate; Doxorubicin Hydrochloride(Adriamycin); and Methotrexate; and Prednisone. Kidney (Renal Cell)Afinitor (Everolimus); Aldesleukin; Avastin (Bevacizumab); CancerAxitinib; Bevacizumab; Everolimus; Inlyta (Axitinib); Nexavar (SorafenibTosylate); Pazopanib Hydrochloride; Proleukin (Aldesleukin); SorafenibTosylate; Sunitinib Malate; Sutent (Sunitinib Malate); Temsirolimus;Torisel (Temsirolimus); or Votrient (Pazopanib Hydrochloride). LiverCancer Nexavar (Sorafenib Tosylate) or Sorafenib Tosylate. MelanomaAldesleukin; Dabrafenib; Dacarbazine; DTIC-Dome (Dacarbazine); Intron A(Recombinant Interferon Alfa-2b); Ipilimumab; Mekinist (Trametinib);Peginterferon Alfa-2b; PEG-Intron (Peginterferon Alfa-2b); Proleukin(Aldesleukin); Recombinant Interferon Alfa-2b; Sylatron (PeginterferonAlfa- 2b); Tafinlar (Dabrafenib); Trametinib; Vemurafenib; Yervoy(Ipilimumab); or Zelboraf (Vemurafenib). Malignant Alimta (PemetrexedDisodium); Cisplatin; Pemetrexed Mesothelioma Disodium; Platinol(Cisplatin); or Platinol-AQ (Cisplatin). Multiple myeloma Aredia(Pamidronate Disodium); Bortezomib; Carfilzomib; Clafen(Cyclophosphamide); Cyclophosphamide; Cytoxan (Cyclophosphamide); Doxil(Doxorubicin Hydrochloride Liposome); Doxorubicin HydrochlorideLiposome; Dox-SL (Doxorubicin Hydrochloride Liposome); Evacet(Doxorubicin Hydrochloride Liposome); Kyprolis (Carfilzomib);Lenalidomide; LipoDox (Doxorubicin Hydrochloride Liposome); Mozobil(Plerixafor); Neosar (Cyclophosphamide); Pamidronate Disodium;Plerixafor; Pomalidomide (Pomalyst); Pomalyst; Revlimid (Lenalidomide);Synovir (Thalidomide); Thalidomide; Thalomid (Thalidomide); Velcade(Bortezomib); Zoledronic Acid; Zometa (Zoledronic Acid)Myeloproliferative Adriamycin PFS (Doxorubicin Hydrochloride);Adriamycin Disorders RDF (Doxorubicin Hydrochloride); Arsenic Trioxide;Azacitidine; Cerubidine (Daunorubicin Hydrochloride); Clafen(Cyclophosphamide); Cyclophosphamide; Cytarabine; Cytosar-U(Cytarabine); Cytarabine; Cytoxan (Cyclophosphamide); Dacogen(Decitabine); Dasatinib; Daunorubicin Hydrochloride; Decitabine;Doxorubicin Hydrochloride; Gleevec (Imatinib Mesylate); ImatinibMesylate; Jakafi (Ruxolitinib Phosphate); Lenalidomide; Mylosar(Azacitidine); Neosar (Cyclophosphamide); Nilotinib; Revlimid(Lenalidomide); Rubidomycin (Daunorubicin Hydrochloride); RuxolitinibPhosphate; Sprycel (Dasatinib); Tarabine PFS (Cytarabine); Tasigna(Nilotinib); Trisenox (Arsenic Trioxide); Vidaza (Azacitidine); VincasarPFS (Vincristine Sulfate); or Vincristine Sulfate. DRUG COMBINATIONSADE: Cytarabine; Daunorubicin Hydrochloride; and Etoposide.Neuroblastoma Adriamycin PFS (Doxorubicin Hydrochloride); Adriamycin RDF(Doxorubicin Hydrochloride); Clafen (Cyclophosphamide);Cyclophosphamide; Cytoxan (Cyclophosphamide); Doxorubicin Hydrochloride;Neosar (Cyclophosphamide); Vincasar PFS (Vincristine Sulfate); orVincristine Sulfate. Non-Hodkin Abitrexate (Methotrexate); Adcetris(Brentuximab Vedotin); Lymphoma Adriamycin PFS (DoxorubicinHydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride); Ambochlorin(Chlorambucil); Amboclorin (Chlorambucil); Arranon (Nelarabine);Bendamustine Hydrochloride; Bexxar (Tositumomab and Iodine I 131Tositumomab); Blenoxane (Bleomycin); Bleomycin; Bortezomib; BrentuximabVedotin; Chlorambucil; Clafen (Cyclophosphamide); Cyclophosphamide;Cytoxan (Cyclophosphamide); Denileukin Diftitox; DepoCyt (LiposomalCytarabine); Doxorubicin Hydrochloride; DTIC-Dome (Dacarbazine); Folex(Methotrexate); Folex PFS (Methotrexate); Folotyn (Pralatrexate);Ibritumomab Tiuxetan; Ibrutinib; Imbruvica (Ibrutinib); Intron A(Recombinant Interferon Alfa-2b); Istodax (Romidepsin); Lenalidomide;Leukeran (Chlorambucil); Linfolizin (Chlorambucil); LiposomalCytarabine; Matulane (Procarbazine Hydrochloride); Methotrexate;Methotrexate LPF (Methotrexate); Mexate (Methotrexate); Mexate-AQ(Methotrexate); Mozobil (Plerixafor); Nelarabine; Neosar(Cyclophosphamide); Ontak (Denileukin Diftitox); Plerixafor;Pralatrexate; Recombinant Interferon Alfa-2b; Revlimid (Lenalidomide);Rituxan (Rituximab); Rituximab; Romidepsin; Tositumomab and Iodine I 131Tositumomab; Treanda (Bendamustine Hydrochloride); Velban (VinblastineSulfate); Velcade (Bortezomib); Velsar (Vinblastine Sulfate);Vinblastine Sulfate; Vincasar PFS (Vincristine Sulfate); VincristineSulfate; Vorinostat; Zevalin (Ibritumomab Tiuxetan); or Zolinza(Vorinostat). DRUG COMBINATIONS CHOP: Cyclophosphamide; DoxorubicinHydrochloride (Hydroxydaunomycin); Vincristine Sulfate (Oncovin); andPrednisone. COPP: Cyclophosphamide; Vincristine Sulfate (Oncovin);Procarbazine Hydrochloride; and Prednisone. CVP: Cyclophosphamide;Vincristine Sulfate; and Prednisone. EPOCH: Etoposide; Prednisone;Vincristine Sulfate (Oncovin); Cyclophosphamide; and DoxorubicinHydrochloride (Hydroxydaunomycin). Hyper-CVAD: Cyclophosphamide;Vincristine Sulfate; Doxorubicin Hydrochloride (Adriamycin); andDexamethasone. ICE: Ifosfamide; Carboplatin; and Etoposide. R-CHOP:Rituximab; Cyclophosphamide; Doxorubicin Hydrochloride(Hydroxydaunomycin); Vincristine Sulfate (Oncovin); and Prednisone.Non-Small Cell Lung Abitrexate (Methotrexate); Abraxane (PaclitaxelAlbumin- Cancer stabilized Nanoparticle Formulation); AfatinibDimaleate; Alimta (Pemetrexed Disodium); Avastin (Bevacizumab);Bevacizumab; Carboplatin; Ceritinib; Cisplatin; Crizotinib; Docetaxel;Erlotinib Hydrochloride; Folex (Methotrexate); Folex PFS (Methotrexate);Gefitinib; Gilotrif (Afatinib Dimaleate); Gemcitabine Hydrochloride;Gemzar (Gemcitabine Hydrochloride); Iressa (Gefitinib); Methotrexate;Methotrexate LPF (Methotrexate); Mexate (Methotrexate); Mexate-AQ(Methotrexate); Paclitaxel; Paclitaxel Albumin-stabilized NanoparticleFormulation; Paraplat (Carboplatin); Paraplatin (Carboplatin);Pemetrexed Disodium; Platinol (Cisplatin); Platinol-AQ (Cisplatin);Tarceva (Erlotinib Hydrochloride); Taxol (Paclitaxel); Taxotere(Docetaxel); Xalkori (Crizotinib); or Zykadia (Ceritinib). DRUGCOMBINATIONS CARBOPLATIN-TAXOL; Carboplatin and Paclitaxel (Taxol).Gemcitabine-Cisplatin: Gemcitabine Hydrochloride and Cisplatin. OvarianCancer Adriamycin PFS (Doxorubicin Hydrochloride); Adriamycin RDF(Doxorubicin Hydrochloride); Carboplatin; Clafen (Cyclophosphamide);Cisplatin; Cyclophosphamide; Cytoxan (Cyclophosphamide); DoxorubicinHydrochloride; Dox-SL (Doxorubicin Hydrochloride Liposome); DOXIL(Doxorubicin Hydrochloride Liposome); Doxorubicin HydrochlorideLiposome; Evacet (Doxorubicin Hydrochloride Liposome); GemcitabineHydrochloride; Gemzar (Gemcitabine Hydrochloride); Hycamtin (TopotecanHydrochloride); LipoDox (Doxorubicin Hydrochloride Liposome); Neosar(Cyclophosphamide); Paclitaxel; Paraplat (Carboplatin); Paraplatin(Carboplatin); Platinol (Cisplatin); Platinol-AQ (Cisplatin); Taxol(Paclitaxel); or Topotecan Hydrochloride. DRUG COMBINATIONS BEP:Bleomycin; Etoposide; and Cisplatin (Platinol). CARBOPLATIN-TAXOL:Carboplatin and Paclitaxel (Taxol). Gemcitabine-Cisplatin: GemcitabineHydrochloride and Cisplatin. Pancreatic cancer Adrucil (Fluorouracil);Afinitor (Everolimus); Efudex (Fluorouracil); Erlotinib Hydrochloride;Everolimus; Fluoroplex (Fluorouracil); Fluorouracil; GemcitabineHydrochloride; Gemzar (Gemcitabine Hydrochloride); Mitomycin C;Mitozytrex (Mitomycin C); Mutamycin (Mitomycin C); Sunitinib Malate;Sutent (Sunitinib Malate); or Tarceva (Erlotinib Hydrochloride). DRUGCOMBINATIONS GEMCITABINE-OXALIPLATIN: Gemcitabine Hydrochloride andOxaliplatin. Penile cancer Blenoxane (Bleomycin); Bleomycin RectalCancer Adrucil (Fluorouracil); Avastin (Bevacizumab); Bevacizumab;Camptosar (Irinotecan Hydrochloride); Cetuximab; Efudex (Fluorouracil);Erbitux (Cetuximab); Fluoroplex (Fluorouracil); Fluorouracil; IrinotecanHydrochloride; Panitumumab; Regorafenib; Stivarga (Regorafenib);Vectibix (Panitumumab); Zaltrap (Ziv-Aflibercept); or Ziv-Aflibercept.DRUG COMBINATIONS CAPOX: Capecitabine and Oxaliplatin. FOLFIRI:Leucovorin Calcium (Folinic Acid); FluorouracilL; IrinotecanHydrochloride. FOLFIRI-BEVACIZUMAB: Leucovorin Calcium (Folinic Acid);Fluorouracil; Irinotecan Hydrochloride; and Bevacizumab.FOLFIRI-CETUXIMAB: Leucovorin Calcium (Folinic Acid); Fluorouracil;Irinotecan Hydrochloride; and Cetuximab. FOLFOX: Leucovorin Calcium(Folinic Acid); Fluorouracil; and Oxaliplatin. XELOX: Capecitabine(Xeloda) and Oxaliplatin. Renal Cell Carcinoma Afinitor (Everolimus);Aldesleukin; Avastin (Bevacimub); Axitinib; Bevacizumab; Everolimus;Inlyta (Axitinib); Nexavar (Sorafenib Tosylate); Sunitinib Malate;Sutent (Sunitinib Malate); Temsirolimus; Torisel (Temsirolimus);Votrient (Pazopanib Hydrochloride) Retinoblastoma Clafen(Cyclophosphamide); Cyclophosphamide; Cytoxan (Cyclophosphamide); orNeosar (Cyclophosphamide). Rhabdomyosarcoma Cosmegen (Dactinomycin);Dactinomycin; Vincasar PFS (Vincristine Sulfate); or VincristineSulfate. Skin cancer (basal cell Adrucil (Fluorouracil); Aldara(Imiquimod); Efudex carcinoma) (Fluorouracil); Erivedge (Vismodegib);Fluoroplex (Fluorouracil); Fluorouracil; Imiquimod; or Vismodegib. Skincancer (melanoma) Aldesleukin; Dacarbazine; DTIC-Dome (Dacarbazine);Ipilimumab; Proleukin (Aldesleukin); Vemurafenib; Yervoy (Ipilimumab);or Zelboraf (Vemurafenib). Small cell lung cancer Abitrexate(Methotrexate); Etopophos (Etoposide Phosphate); Etoposide; EtoposidePhosphate; Folex (Methotrexate); Folex PFS (Methotrexate); Hycamtin(Topotecan Hydrochloride); Methotrexate; Methotrexate LPF(Methotrexate); Mexate (Methotrexate); Mexate-AQ (Methotrexate); Toposar(Etoposide); Topotecan Hydrochloride; or VePesid (Etoposide). Softtissue sarcoma Adriamycin PFS (Doxorubicin Hydrochloride); AdriamycinRDF (Doxorubicin Hydrochloride); Cosmegen (Dactinomycin); Dactinomycin;orDoxorubicin Hydrochloride. Testicular cancer Blenoxane (Bleomycin);Bleomycin; Cisplatin; Cosmegen (Dactinomycin); Cyfos (Ifosfamide);Dactinomycin; Etopophos (Etoposide Phosphate); Etoposide; EtoposidePhosphate; Ifex (Ifosfamide); Ifosfamide; Ifosfamidum (Ifosfamide);Platinol (Cisplatin); Platinol-AQ (Cisplatin); Toposar (Etoposide;;Velban (Vinblastine Sulfate); Velsar (Vinblastine Sulfate); or VePesid(Etoposide); Vinblastine Sulfate. Thyroid cancer Adriamycin PFS(Doxorubicin Hydrochloride); Adriamycin RDF (Doxorubicin Hydrochloride);Cabozantinib-S-Malate; Caprelsa (Vandetanib); Cometriq(Cabozantinib-S-Malate); Doxorubicin Hydrochloride; Nexavar (SorafenibTosylate); or Sorafenib Tosylate; Vandetanib. Vaginal cancer Gardasil(Recombinant HPV Quadrivalent Vaccine); or Recombinant HumanPapillomavirus (HPV) Quadrivalent Vaccine. Vulvar cancer Blenoxane(Bleomycin); Bleomycin; Gardasil (Recombinant HPV Quadrivalent Vaccine);or Recombinant Human Papillomavirus (HPV) Quadrivalent Vaccine. WilmsTumor or other Adriamycin PFS (Doxorubicin Hydrochloride); AdriamycinRDF childhood kidney (Doxorubicin Hydrochloride); Cosmegen(Dactinomycin); cancers Dactinomycin; Doxorubicin Hydrochloride;Vincasar PFS (Vincristine Sulfate); or Vincristine Sulfate.

In further aspects, an mTOR inhibitor, e.g., an mTOR inhibitor describedherein, may be used in a treatment regimen in combination with surgery,chemotherapy, radiation, immunosuppressive agents, such as cyclosporin,azathioprine, methotrexate, mycophenolate, and FK506, antibodies, orother immunoablative agents such as CAMPATH, anti-CD3 antibodies orother antibody therapies, cytoxin, fludarabine, cyclosporin, FK506,rapamycin, mycophenolic acid, steroids, FR901228, cytokines, andirradiation. peptide vaccine, such as that described in Izumoto et al.2008 J Neurosurg 108:963-971.

In one embodiment, an mTOR inhibitor described herein can be used incombination with a chemotherapeutic agent. Exemplary chemotherapeuticagents include an anthracycline (e.g., doxorubicin (e.g., liposomaldoxorubicin)). a vinca alkaloid (e.g., vinblastine, vincristine,vindesine, vinorelbine), an alkylating agent (e.g., cyclophosphamide,decarbazine, melphalan, ifosfamide, temozolomide), an immune cellantibody (e.g., alemtuzamab, gemtuzumab, rituximab, tositumomab), anantimetabolite (including, e.g., folic acid antagonists, pyrimidineanalogs, purine analogs and adenosine deaminase inhibitors (e.g.,fludarabine)), an mTOR inhibitor, a TNFR glucocorticoid induced TNFRrelated protein (GITR) agonist, a proteasome inhibitor (e.g.,aclacinomycin A, gliotoxin or bortezomib), an immunomodulator such asthalidomide or a thalidomide derivative (e.g., lenalidomide).

General Chemotherapeutic agents considered for use in combinationtherapies include anastrozole (Arimidex®), bicalutamide (Casodex®),bleomycin sulfate (Blenoxane®), busulfan (Myleran®), busulfan injection(Busulfex®), capecitabine (Xeloda®),N4-pentoxycarbonyl-5-deoxy-5-fluorocytidine, carboplatin (Paraplatin®),carmustine (BiCNU®), chlorambucil (Leukeran®), cisplatin (Platinol®),cladribine (Leustatin®), cyclophosphamide (Cytoxan® or Neosar®),cytarabine, cytosine arabinoside (Cytosar-U®), cytarabine liposomeinjection (DepoCyt®), dacarbazine (DTIC-Dome®), dactinomycin(Actinomycin D, Cosmegan), daunorubicin hydrochloride (Cerubidine®),daunorubicin citrate liposome injection (DaunoXome®), dexamethasone,docetaxel (Taxotere®), doxorubicin hydrochloride (Adriamycin®, Rubex®),etoposide (Vepesid®), fludarabine phosphate (Fludara®), 5-fluorouracil(Adrucil®, Efudex®), flutamide (Eulexin®), tezacitibine, Gemcitabine(difluorodeoxycitidine), hydroxyurea (Hydrea®), Idarubicin (Idamycin®),ifosfamide (IFEX®), irinotecan (Camptosar®), L-asparaginase (ELSPAR®),leucovorin calcium, melphalan (Alkeran®), 6-mercaptopurine(Purinethol®), methotrexate (Folex®), mitoxantrone (Novantrone®),mylotarg, paclitaxel (Taxol®), phoenix (Yttrium90/MX-DTPA), pentostatin,polifeprosan 20 with carmustine implant (Gliadel®), tamoxifen citrate(Nolvadex®), teniposide (Vumon®), 6-thioguanine, thiotepa, tirapazamine(Tirazone®), topotecan hydrochloride for injection (Hycamptin®),vinblastine (Velban®), vincristine (Oncovin®), and vinorelbine(Navelbine®).

Exemplary alkylating agents include, without limitation, nitrogenmustards, ethylenimine derivatives, alkyl sulfonates, nitrosoureas andtriazenes): uracil mustard (Aminouracil Mustard®, Chlorethaminacil®,Demethyldopan®, Desmethyldopan®, Haemanthamine®, Nordopan®, Uracilnitrogen Mustard®, Uracillost®, Uracilmostaza®, Uramustin®,Uramustine®), chlormethine (Mustargen®), cyclophosphamide (Cytoxan®,Neosar®, Clafen®, Endoxan®, Procytox®, Revimmune™), ifosfamide(Mitoxana®), melphalan (Alkeran®), Chlorambucil (Leukeran®), pipobroman(Amedel®, Vercyte®), triethylenemelamine (Hemel®, Hexalen®, Hexastat®),triethylenethiophosphoramine, Temozolomide (Temodar®), thiotepa(Thioplex®), busulfan (Busilvex®, Myleran®), carmustine (BiCNU®),lomustine (CeeNU®), streptozocin (Zanosar®), and Dacarbazine(DTIC-Dome®). Additional exemplary alkylating agents include, withoutlimitation, Oxaliplatin (Eloxatin®); Temozolomide (Temodar® andTemodal®); Dactinomycin (also known as actinomycin-D, Cosmegen®);Melphalan (also known as L-PAM, L-sarcolysin, and phenylalanine mustard,Alkeran®); Altretamine (also known as hexamethylmelamine (HMM),Hexalen®); Carmustine (BiCNU®); Bendamustine (Treanda®); Busulfan(Busulfex® and Myleran®); Carboplatin (Paraplatin®); Lomustine (alsoknown as CCNU, CeeNU®); Cisplatin (also known as CDDP, Platinol® andPlatinol®-AQ); Chlorambucil (Leukeran®); Cyclophosphamide (Cytoxan® andNeosar®); Dacarbazine (also known as DTIC, DIC and imidazolecarboxamide, DTIC-Dome®); Altretamine (also known as hexamethylmelamine(HMM), Hexalen®); Ifosfamide (Ifex®); Prednumustine; Procarbazine(Matulane®); Mechlorethamine (also known as nitrogen mustard, mustineand mechloroethamine hydrochloride, Mustargen®); Streptozocin(Zanosar®); Thiotepa (also known as thiophosphoamide, TESPA and TSPA,Thioplex®); Cyclophosphamide (Endoxan®, Cytoxan®, Neosar®, Procytox®,Revimmune®); and Bendamustine HCl (Treanda®).

Exemplary immunomodulators include, e.g., afutuzumab (available fromRoche®); pegfilgrastim (Neulasta®); lenalidomide (CC-5013, Revlimid®);thalidomide (Thalomid®), actimid (CC4047); and IRX-2 (mixture of humancytokines including interleukin 1, interleukin 2, and interferon γ, CAS951209-71-5, available from IRX Therapeutics).

Exemplary anthracyclines include, e.g., doxorubicin (Adriamycin® andRubex®); bleomycin (Lenoxane®); daunorubicin (dauorubicin hydrochloride,daunomycin, and rubidomycin hydrochloride, Cerubidine®); daunorubicinliposomal (daunorubicin citrate liposome, DaunoXome®); mitoxantrone(DHAD, Novantrone®); epirubicin (Ellence™); idarubicin (Idamycin®,Idamycin PFS®); mitomycin C (Mutamycin®); geldanamycin; herbimycin;ravidomycin; and desacetylravidomycin.

Exemplary vinca alkaloids include, e.g., vinorelbine tartrate(Navelbine®), Vincristine (Oncovin®), and Vindesine (Eldisine®));vinblastine (also known as vinblastine sulfate, vincaleukoblastine andVLB, Alkaban-AQ® and Velban®); and vinorelbine (Navelbine®).

Exemplary proteosome inhibitors include bortezomib (Velcade®);carfilzomib (PX-171-007,(S)-4-Methyl-N—((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)-pentanamide);marizomib (NPI-0052); ixazomib citrate (MLN-9708); delanzomib(CEP-18770); andO-Methyl-N-[(2-methyl-5-thiazolyl)carbonyl]-L-seryl-O-methyl-N-[(1S)-2-[(2R)-2-methyl-2-oxiranyl]-2-oxo-1-(phenylmethyl)ethyl]-L-serinamide(ONX-0912).

Exemplary GITR agonists include, e.g., GITR fusion proteins andanti-GITR antibodies (e.g., bivalent anti-GITR antibodies) such as,e.g., a GITR fusion protein described in U.S. Pat. No. 6,111,090,European Patent No.: 090505B1, U.S. Pat. No. 8,586,023, PCT PublicationNos.: WO 2010/003118 and 2011/090754, or an anti-GITR antibodydescribed, e.g., in U.S. Pat. No. 7,025,962, European Patent No.:1947183B1, U.S. Pat. No. 7,812,135, U.S. Pat. No. 8,388,967, U.S. Pat.No. 8,591,886, European Patent No.: EP 1866339, PCT Publication No.: WO2011/028683, PCT Publication No.: WO 2013/039954, PCT Publication No.:WO2005/007190, PCT Publication No.: WO 2007/133822, PCT Publication No.:WO2005/055808, PCT Publication No.: WO 99/40196, PCT Publication No.: WO2001/03720, PCT Publication No.: WO99/20758, PCT Publication No.:WO2006/083289, PCT Publication No.: WO 2005/115451, U.S. Pat. No.7,618,632, and PCT Publication No.: WO 2011/051726.

In one embodiment, an mTOR inhibitor described herein is administered ata low, immune enhancing, dose to a subject in combination with a proteintyrosine phosphatase inhibitor, e.g., a protein tyrosine phosphataseinhibitor described herein. In one embodiment, the protein tyrosinephosphatase inhibitor is an SHP-1 inhibitor, e.g., an SHP-1 inhibitordescribed herein, such as, e.g., sodium stibogluconate. In oneembodiment, the protein tyrosine phosphatase inhibitor is an SHP-2inhibitor, e.g., an SHP-2 inhibitor described herein.

In one embodiment, a low, immune enhancing, dose, of an mTOR inhibitor,e.g., an allosteric inhibitor, e.g., RAD001, or a catalytic inhibitor isadministered in combination with a kinase inhibitor.

In one embodiment, the kinase inhibitor is an MNK inhibitor, e.g., a MNKinhibitor selected from CGP052088;4-amino-3-(p-fluorophenylamino)-pyrazolo [3,4-d] pyrimidine (CGP57380);cercosporamide; ETC-1780445-2; and 4-amino-5-(4-fluoroanilino)-pyrazolo[3,4-d] pyrimidine. The MNK inhibitor can be, e.g., a MNK1a, MNK1b,MNK2a and/or MNK2b inhibitor. In one embodiment, the kinase inhibitor is4-amino-5-(4-fluoroanilino)-pyrazolo [3,4-d] pyrimidine.

In one embodiment, the kinase inhibitor is a CDK4 inhibitor selectedfrom7-cyclopentyl-N,N-dimethyl-2-((5-(piperazin-1-yl)pyridine-2-yl)amino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide(also referred to as LEE011); aloisine A; flavopiridol or HMR-1275,2-(2-chlorophenyl)-5,7-dihydroxy-8-[(3S,4R)-3-hydroxy-1-methyl-4-piperidinyl]-4-chromenone; crizotinib(PF-02341066;2-(2-Chlorophenyl)-5,7-dihydroxy-8-[(2R,3S)-2-(hydroxymethyl)-1-methyl-3-pyrrolidinyl]-4H-1-benzopyran-4-one,hydrochloride (P276-00);1-methyl-5-[[2-[5-(trifluoromethyl)-1H-imidazol-2-yl]-4-pyridinyl]oxy]-N-[4-(trifluoromethyl)phenyl]-1H-benzimidazol-2-amine(RAF265); indisulam (E7070); roscovitine (CYC202); palbociclib(PD0332991); dinaciclib (SCH727965);N-[5-[[(5-tert-butyloxazol-2-yl)methyl]thio]thiazol-2-yl]piperidine-4-carboxamide(BMS 387032);4-[[9-chloro-7-(2,6-difluorophenyl)-5H-pyrimido[5,4-d][2]benzazepin-2-yl]amino]-benzoicacid (MLN8054);5-[3-(4,6-difluoro-1H-benzimidazol-2-yl)-1H-indazol-5-yl]-N-ethyl-4-methyl-3-pyridinemethanamine(AG-024322); 4-(2,6-dichlorobenzoylamino)-1H-pyrazole-3-carboxylic acidN-(piperidin-4-yl)amide (AT7519);4-[2-methyl-1-(1-methylethyl)-1H-imidazol-5-yl]-N-[4-(methylsulfonyl)phenyl]-2-pyrimidinamine(AZD5438); and XL281 (BMS908662).

In one embodiment, the kinase inhibitor is a CDK4 inhibitor, e.g., aCDK4 inhibitor described herein, e.g., a CDK4/6 inhibitor, such as,e.g.,7-cyclopentyl-N,N-dimethyl-2-((5-(piperazin-1-yl)pyridine-2-yl)amino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide(also referred to as LEE011) or6-Acetyl-8-cyclopentyl-5-methyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one,hydrochloride (also referred to as palbociclib or PD0332991).

In one embodiment, the kinase inhibitor is a CDK4 inhibitor, e.g.,palbociclib (PD0332991), and the palbociclib is administered at a doseof about 50 mg, 60 mg, 70 mg, 75 mg, 80 mg, 90 mg, 100 mg, 105 mg, 110mg, 115 mg, 120 mg, 125 mg, 130 mg, 135 mg (e.g., 75 mg, 100 mg or 125mg) daily for a period of time, e.g., daily for 14-21 days of a 28 daycycle, or daily for 7-12 days of a 21 day cycle. In one embodiment, 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or more cycles of palbociclib areadministered.

In one embodiment, the kinase inhibitor is a BTK inhibitor, e.g.,selected from ibrutinib (PCI-32765); GDC-0834; RN-486; CGI-560;CGI-1764; HM-71224; CC-292; ONO-4059; CNX-774; and LFM-A13.

In one embodiment, the kinase inhibitor is a BTK inhibitor, e.g.,ibrutinib (PCI-32765), and the ibrutinib is administered at a dose ofabout 250 mg, 300 mg, 350 mg, 400 mg, 420 mg, 440 mg, 460 mg, 480 mg,500 mg, 520 mg, 540 mg, 560 mg, 580 mg, 600 mg (e.g., 250 mg, 420 mg or560 mg) daily for a period of time, e.g., daily for 21 day cycle, ordaily for 28 day cycle. In one embodiment, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12 or more cycles of ibrutinib are administered.

In one embodiment, the kinase inhibitor is an mTOR inhibitor. MTORinhibitors can be selected from the section elsewhere herein entitledmTOR Inhibitors. The dose referred to here is not the low, immuneenhancing, dose of an mTOR inhibitor, but rather a dose sufficient togive an anti-cancer effect, and is higher than the low, immuneenhancing, dose, described herein, e.g., a dose. Thus, in an embodiment,two different administrations of an mTOR inhibitor are given, a low,immune enhancing dose, e.g., to optimize immune effector cell function,and a higher dose given for an anticancer effect.

In one embodiment, the kinase inhibitor is an mTOR inhibitor, e.g.,rapamycin, and the rapamycin is administered at a dose sufficient togive an anti-cancer effect, and higher than the low, immune enhancing,dose, described herein, e.g., a dose of about 3 mg, 4 mg, 5 mg, 6 mg, 7mg, 8 mg, 9 mg, 10 mg (e.g., 6 mg) daily for a period of time, e.g.,daily for 21 day cycle cycle, or daily for 28 day cycle. In oneembodiment, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or more cycles ofrapamycin are administered.

In one embodiment, the kinase inhibitor is an mTOR inhibitor, e.g.,everolimus and the everolimus is administered at a dose sufficient togive an anti-cancer effect, and higher than the low, immune enhancing,dose, described herein, e.g., a dose of about 2 mg, 2.5 mg, 3 mg, 4 mg,5 mg, 6 mg, 7 mg, 8 mg, 9 mg, 10 mg, 11 mg, 12 mg, 13 mg, 14 mg, 15 mg(e.g., 10 mg) daily for a period of time, e.g., daily for 28 day cycle.In one embodiment, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or more cyclesof everolimus are administered.

In another aspect, an mTOR inhibitor, e.g., an mTOR inhibitor describedherein, can be administered at low, immune enhancing, dose incombination with an additional agent which inhibits one or moreinhibitory molecules, e.g., PD1, PD-L1, CTLA4, TIM3, LAG3, VISTA, BTLA,TIGIT, LAIR1, CD160, 2B4 and TGFR beta. Inhibition of an inhibitorymolecule, e.g., by inhibition at the DNA, RNA or protein level, can leadto increased immune function, as described herein. In embodiments, aninhibitory nucleic acid, e.g., an inhibitory nucleic acid, e.g., adsRNA, e.g., an siRNA or shRNA, can be used to inhibit expression of aninhibitory molecule. In an embodiment the inhibitor is an shRNA. In oneembodiment, the inhibitor of an inhibitory signal can be, e.g., anantibody or antibody fragment that binds to an inhibitory molecule. Forexample, the agent can be an antibody or antibody fragment that binds toPD1, PD-L1, PD-L2 or CTLA4 (e.g., ipilimumab (also referred to asMDX-010 and MDX-101, and marketed as Yervoy®; Bristol-Myers Squibb;Tremelimumab (IgG2 monoclonal antibody available from Pfizer, formerlyknown as ticilimumab, CP-675,206).). In an embodiment, the agent is anantibody or antibody fragment that binds to TIM3. In an embodiment, theagent is an antibody or antibody fragment that binds to LAG3.

In an embodiment, an mTOR inhibitor can be used in low, immuneenhancing, dose in combination with an inhibitor of PD1, e.g., aninhibitor of the interaction of PD1 and one of its natural ligands. Inan embodiment, the mTOR inhibitor is administered first, e.g., the PD1inhibitor is not administered until the level of PD1 positive T cells isreduced. In an embodiment, the mTOR inhibitor is administered at thesame time as or after the PD1 inhibitor is administered.

PD1 is an inhibitory member of the CD28 family of receptors that alsoincludes CD28, CTLA-4, ICOS, and BTLA. PD1 is expressed on activated Bcells, T cells and myeloid cells (Agata et al. 1996 Int. Immunol8:765-75). Two ligands for PD1, PD-L1 and PD-L2 have been shown todownregulate T cell activation upon binding to PD1 (Freeman et a. 2000 JExp Med 192:1027-34; Latchman et al. 2001 Nat Immunol 2:261-8; Carter etal. 2002 Eur J Immunol 32:634-43). PD-L1 is abundant in human cancers(Dong et al. 2003 J Mol Med 81:281-7; Blank et al. 2005 Cancer Immunol.Immunother 54:307-314; Konishi et al. 2004 Clin Cancer Res 10:5094).Immune suppression can be reversed by inhibiting the local interactionof PD1 with PD-L1. Antibodies, antibody fragments, and other inhibitorsof PD1, PD-L1 and PD-L2 are available in the art and may be usedcombination with an mTOR inhibitor described herein. For example,nivolumab (also referred to as BMS-936558 or MDX1106; Bristol-MyersSquibb) is a fully human IgG4 monoclonal antibody which specificallyblocks PD1. Nivolumab (clone 5C4) and other human monoclonal antibodiesthat specifically bind to PD1 are disclosed in U.S. Pat. No. 8,008,449and WO2006/121168. Pidilizumab (CT-011; Cure Tech) is a humanized IgG1kmonoclonal antibody that binds to PD1Pidilizumab and other humanizedanti-PD1 monoclonal antibodies are disclosed in WO2009/101611.Lambrolizumab (also referred to as MK03475; Merck) is a humanized IgG4monoclonal antibody that binds to PD1. Lambrolizumab and other humanizedanti-PD1 antibodies are disclosed in U.S. Pat. No. 8,354,509 andWO2009/114335. MDPL3280A (Genentech/Roche) is a human Fc optimized IgG1monoclonal antibody that binds to PD-L1. MDPL3280A and other humanmonoclonal antibodies to PD-L1 are disclosed in U.S. Pat. No. 7,943,743and U.S Publication No.: 20120039906. Other anti-PD-L1 binding agentsinclude YW243.55.570 (heavy and light chain variable regions are shownin SEQ ID NOs 20 and 21 in WO2010/077634) and MDX-1 105 (also referredto as BMS-936559, and, e.g., anti-PD-L1 binding agents disclosed inWO2007/005874). AMP-224 (B7-DCIg; Amplimmune; e.g., disclosed inWO2010/027827 and WO2011/066342), is a PD-L2 Fc fusion soluble receptorthat blocks the interaction between PD1 and B7-H1. Other anti-PD1antibodies include AMP 514 (Amplimmune), among others, e.g., anti-PD1antibodies disclosed in U.S. Pat. No. 8,609,089, US 2010028330, and/orUS 20120114649.

In some embodiments, an mTOR inhibitor, e.g., an mTOR inhibitordescribed herein, is administered at low, immune enhancing, dose to asubject who has a viral infection, e.g., a viral infection describedherein. The subject may receive treatment with an additional therapeuticagent, such as an approved drug for that type of viral infection, incombination with the mTOR inhibitor. Exemplary antiviral agents that maybe used in the compositions and methods of the invention include, butare not limited to, Abacavir; Acyclovir; Adefovir; Amantadine;Amprenavir; Ampligen; Arbidol; Atazanavir; Atripla; Balavir;Boceprevirertet; Cidofovir; Combivir; Dolutegravir; Darunavir;Delavirdine; Didanosine; Docosanol; Edoxudine; Efavirenz; Emtricitabine;Enfuvirtide; Entecavir; Ecoliever; Famciclovir; Fomivirsen;Fosamprenavir; Foscarnet; Fosfonet; Ganciclovir; Ibacitabine; Imunovir;Idoxuridine; Imiquimod; Indinavir; Inosine; Interferon; Interferon typeI; Interferon type II; Interferon type III; Lamivudine; Lopinavir;Loviride; Maraviroc; Moroxydine; Methisazone; Nelfinavir; Nevirapine;Nexavir; Nucleoside analogues; Oseltamivir (Tamiflu); Peginterferonalfa-2a; Penciclovir; Peramivir; Pleconaril; Podophyllotoxin;Raltegravir; Ribavirin; Rimantadine; Ritonavir; Pyramidine; Saquinavir;Sofosbuvir; Stavudine; Telaprevir; Tenofovir; Tenofovir disoproxil;Tipranavir; Trifluridine; Trizivir; Tromantadine; Truvada; traporved;Valaciclovir; Valganciclovir; Vicriviroc; Vidarabine; Viramidine;Zalcitabine; Zanamivir; and Zidovudine.

In an embodiment the method further comprises the administration of alow, immune enhancing, dose of an mTOR inhibitor in combination withanti-bacterial, anti-mycobacterial, anti-fungal or anti-parasitic orprotozoal agents.

Pharmaceutical Compositions

In one aspect, the present invention relates to pharmaceuticalcompositions comprising an mTOR inhibitor, e.g., an mTOR inhibitor asdescribed herein. In some embodiments, the mTOR inhibitor is formulatedfor administration in combination with another agent, e.g., as describedherein.

In one aspect, the present invention relates to pharmaceuticalcompositions comprising an mTOR inhibitor as described herein,potentially in combination with an antigen such as a vaccine or vaccineantigen.

In general, compounds of the invention will be administered intherapeutically effective amounts as described above via any of theusual and acceptable modes known in the art, either singly or incombination with one or more therapeutic agents (e.g., a vaccine orother antigen).

The pharmaceutical formulations may be prepared using conventionaldissolution and mixing procedures. For example, the bulk drug substance(e.g., an mTOR inhibitor or stabilized form of the compound (e.g.,complex with a cyclodextrin derivative or other known complexationagent) is dissolved in a suitable solvent in the presence of one or moreof the excipients described herein. The mTOR inhibitor is typicallyformulated into pharmaceutical dosage forms to provide an easilycontrollable dosage of the drug and to give the patient an elegant andeasily handleable product.

Compounds of the invention can be administered as pharmaceuticalcompositions by any conventional route, in particular enterally, e.g.,orally, e.g., in the form of tablets or capsules, or parenterally, e.g.,in the form of injectable solutions or suspensions, topically, e.g., inthe form of lotions, gels, ointments or creams, or in a nasal orsuppository form. Where an mTOR inhibitor is administered in combinationwith (either simultaneously with or separately from) another agent asdescribed herein, in one aspect, both components can be administered bythe same route (e.g., parenterally). Alternatively, another agent may beadministered by a different route relative to the mTOR inhibitor. Forexample, an mTOR inhibitor may be administered orally and the otheragent may be administered parenterally. Pharmaceutical compositionscomprising an mTOR inhibitor in free form or in a pharmaceuticallyacceptable salt form in association with at least one pharmaceuticallyacceptable carrier or diluent can be manufactured in a conventionalmanner by mixing, granulating or coating methods. For example, oralcompositions can be tablets or gelatin capsules comprising the activeingredient together with a) diluents, e.g., lactose, dextrose, sucrose,mannitol, sorbitol, cellulose and/or glycine; b) lubricants, e.g.,silica, talcum, stearic acid, its magnesium or calcium salt and/orpolyethyleneglycol; for tablets also c) binders, e.g., magnesiumaluminum silicate, starch paste, gelatin, tragacanth, methylcellulose,sodium carboxymethylcellulose and or polyvinylpyrrolidone; if desired d)disintegrants, e.g., starches, agar, alginic acid or its sodium salt, oreffervescent mixtures; and/or e) absorbents, colorants, flavors andsweeteners. Oral formulations can also comprise the active ingredientalong with 20-60% Eudragit EPO, Hydroxypropyl cellulose EF,Hydroxypropyl methylcellulose, or Kollidon VA64, and up to 5% ofpluronic F68, Cremophor EL, or Gelucire 44/14. Injectable compositionscan be aqueous isotonic solutions or suspensions, and suppositories canbe prepared from fatty emulsions or suspensions. The compositions may besterilized and/or contain adjuvants, such as preserving, stabilizing,wetting or emulsifying agents, solution promoters, salts for regulatingthe osmotic pressure and/or buffers. In addition, they may also containother therapeutically valuable substances. Suitable formulations fortransdermal applications include an effective amount of a compound ofthe present invention with a carrier. A carrier can include absorbablepharmacologically acceptable solvents to assist passage through the skinof the host. For example, transdermal devices are in the form of abandage comprising a backing member, a reservoir containing the compoundoptionally with carriers, optionally a rate controlling barrier todeliver the compound to the skin of the host at a controlled andpredetermined rate over a prolonged period of time, and means to securethe device to the skin. Matrix transdermal formulations may also beused. In a further aspect, the mTOR inhibitors described herein may beadministered via a microneedle patch. Microneedle based drug delivery iswell known in the art (See, e.g., U.S. Pat. No. 8,162,901) and thesetechnologies and methods may be adapted by one of skill in the art foradministration of an mTOR inhibitor as described herein. Suitableformulations for topical application, e.g., to the skin and eyes, arepreferably aqueous solutions, ointments, creams or gels well-known inthe art. Such formulations may contain solubilizers, stabilizers,tonicity enhancing agents, buffers and preservatives.

The pharmaceutical composition (or formulation) for application may bepackaged in a variety of ways depending upon the method used foradministering the drug. Generally, an article for distribution includesa container having deposited therein the pharmaceutical formulation inan appropriate form. Suitable containers are well-known to those skilledin the art and include materials such as bottles (plastic and glass),sachets, ampoules, plastic bags, metal cylinders, and the like. Thecontainer may also include a tamper-proof assemblage to preventindiscreet access to the contents of the package. In addition, thecontainer has deposited thereon a label that describes the contents ofthe container. The label may also include appropriate warnings. Theinvention also provides for a pharmaceutical combinations, e.g. a kit,comprising a) a first agent which is an mTOR inhibitor as disclosedherein, in free form or in pharmaceutically acceptable salt form, and b)at least one additional agent. The kit can comprise instructions for itsadministration.

The term “pharmaceutical combination” as used herein means a productthat results from the mixing or combining of more than one activeingredient and includes both fixed and non-fixed combinations of theactive ingredients. The term “fixed combination” means that the activeingredients, e.g. an mTOR inhibitor and other agent, are bothadministered to a patient simultaneously in the form of a single entityor dosage. The term “non-fixed combination” means that the activeingredients, e.g. an mTOR inhibitor and other agent, are bothadministered to a patient as separate entities either simultaneously,concurrently or sequentially with no specific time limits, wherein suchadministration provides therapeutically effective levels of the 2compounds in the body of the patient. The latter also applies tococktail therapy, e.g. the administration of 3 or more activeingredients.

Sustained Release

mTOR inhibitors, e.g., allosteric mTOR inhibitors or catalytic mTORinhibitors, disclosed herein can be provided as pharmaceuticalformulations in form of oral solid dosage forms comprising an mTORinhibitor disclosed herein, e.g., rapamycin or RAD001, which satisfyproduct stability requirements and/or have favorable pharmacokineticproperties over the immediate release (IR) tablets, such as reducedaverage plasma peak concentrations, reduced inter- and intra-patientvariability in the extent of drug absorption and in the plasma peakconcentration, reduced C_(max)/C_(min) ratio and/or reduced foodeffects. Provided pharmaceutical formulations may allow for more precisedose adjustment and/or reduce frequency of adverse events thus providingsafer treatments for patients with an mTOR inhibitor disclosed herein,e.g., rapamycin or RAD001.

In some embodiments, the present disclosure provides stable extendedrelease formulations of an mTOR inhibitor disclosed herein, e.g.,rapamycin or RAD001, which are multi-particulate systems and may havefunctional layers and coatings.

The term “extended release, multi-particulate formulation as used hereinrefers to a formulation which enables release of an mTOR inhibitordisclosed herein, e.g., rapamycin or RAD001, over an extended period oftime e.g. over at least 1, 2, 3, 4, 5 or 6 hours. The extended releaseformulation may contain matrices and coatings made of specialexcipients, e.g., as described herein, which are formulated in a manneras to make the active ingredient available over an extended period oftime following ingestion.

The term “extended release” can be interchangeably used with the terms“sustained release” (SR) or “prolonged release”. The term “extendedrelease” relates to a pharmaceutical formulation that does not releaseactive drug substance immediately after oral dosing but over an extendedin accordance with the definition in the pharmacopoeias Ph. Eur. (7^(th)edition) mongraph for tablets and capsules and USP general chapter<1151> for pharmaceutical dosage forms. The term “Immediate Release”(IR) as used herein refers to a pharmaceutical formulation whichreleases 85% of the active drug substance within less than 60 minutes inaccordance with the definition of “Guidance for Industry: “DissolutionTesting of Immediate Release Solid Oral Dosage Forms” (FDA CDER, 1997).In some embodiments, the term “immediate release” means release ofeverolismus from tablets within the time of 30 minutes, e.g., asmeasured in the dissolution assay described herein.

Stable extended release formulations of an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, can be characterized by an in-vitrorelease profile using assays known in the art, such as a dissolutionassay as described herein: a dissolution vessel filled with 900 mLphosphate buffer pH 6.8 containing sodium dodecyl sulfate 0.2% at 37° C.and the dissolution is performed using a paddle method at 75 rpmaccording to USP by according to USP testing monograph 711, and Ph. Eur.testing monograph 2.9.3. respectively.

In some embodiments, stable extended release formulations of an mTORinhibitor disclosed herein, e.g., rapamycin or RAD001, release the mTORinhibitor in the in-vitro release assay according to following releasespecifications:

0.5 h: <45%, or <40, e.g., <30%

1 h: 20-80%, e.g., 30-60%

2 h: >50%, or >70%, e.g., >75%

3 h: >60%, or >65%, e.g., >85%, e.g., >90%.

In some embodiments, stable extended release formulations of an mTORinhibitor disclosed herein, e.g., rapamycin or RAD001, release 50% ofthe mTOR inhibitor not earlier than 45, 60, 75, 90, 105 min or 120 minin the in-vitro dissolution assay.

In one embodiment, stable extended release formulations of an mTORinhibitor disclosed herein, e.g., rapamycin or RAD001, comprise an mTORinhibitor in a fast dissolving or disintegrating carrier matrix incombination with coatings wherein at least one of the coatings is anextended release coating. In another embodiment, stable extended releaseformulations of an mTOR inhibitor disclosed herein, e.g., rapamycin orRAD001, comprise an mTOR inhibitor in a non-disintegrating carriermatrix with extended release properties, which can be combinedoptionally with additional coatings.

In some embodiments, a carrier matrix comprises matrix formers,typically matrix forming polymers, and may contain additionalexcipients, such as fillers, e.g., lactose, mannitol, maltodextrine,pregelatinized starch, calcium phosphate, or microcrystalllinecellulose, and disintegrants, e.g., corn starch, croscamellose, sodiumstarch glycolate, or crospovidone, antioxidants, e.g., butylhydroxyanisol, butylhydroxy toluol, ascorbyl palmitate, tocopherol, vitamin Epolyethylene glycol succinate, and process enhancing agents, such aslubricants and glidants, e.g., colloidal silicon dioxide, talc, glycerylmonostearate, magnesium stearate, calcium stearate, or sodium stearylfumarate. The term “matrix former” typically relates to apharmaceutically inert material which provides physical stability, suchas e.g., mechanical or binding stability.

Suitable matrix forming polymers used for fast dissolving ordisintegrating carrier matrices are known in the art include forinstance cellulose or starch, for instance microcrystalline cellulose(“MCC”), for example Avicel PH 101 (FMC BioPolymer), acacia, sodiumalginate, gelatine, starch, pregelatinised starch, methylcellulose,hydroxypropyl methylcellulose (“HPMC”), hydroxypropylcellulose,hydroxyethylcellulose, polyethylene glycol or polyvinylpyrrolidone(“PVP”), carrageenan, such as Gelcarin GP 812 or combinations thereof.

Suitable matrix forming excipients for non-disintegrating carriermatrices with extended release properties are known in the art includefor instance acacia, sodium alginate, gelatine, carboxmethylcellulosesodium, (or “CMC sodium”), methylcellulose, ethylcellulose and celluloseacetate or polyacrylates, e.g., ammonio methacrylate copolymers(Eudragit RS/RL), hydroxypropyl methylcellulose (“HPMC”),hydroxypropylcellulose, hydroxyethylcellulose, polyvinylacetate,polyethylene glycol or polyvinylpyrrolidone (“PVP”), e.g., carrageenan,such as Gelcarin GP 812, glyceryl monostearate, stearylalcohol, stearicacid, glyceryl behenate, Vitamin E polyethylen glycol succinate, orcombinations thereof.

In one embodiment, the extended release coating is a layer formed withwater insoluble, non-disintegrating polymers, controlling the release bypermeation of the drug through this layer.

The extended release coating may also contain one or more of poreformers, plasticizers, and processing enhancing agents, such aslubricants and anti tacking agents. Suitable extended release coatingforming polymers which enable diffusion controlled release are known inthe art include for instance ethylcellulose and cellulose acetate orpolyacrylates, e.g., ammonio methacrylate copolymers (Eudragit RS/RL),polyvinylacetate or combinations thereof. In a particular embodiment,the extended release coating forming polymer is ethylcellulose orcellulose acetate or polyacrylates, e.g., ammoniomethacrylate copolymerType A (Eudragit RS) or ammonio-methacrylate copolymer Type B (EudragitRL) or combinations thereof. Moreover, the extended release coating mayinclude plasticizer, such as triacetine, triethyl citrate,dibutylsebacate, diethylsebacate, polyethylene glycol 3000, 4000 or6000, acetyltriethylcitrate, acetyltributylcitrate, or diethylphthalate,and/or anti-tacking agents such Syloid 244 FP, talc, glycerylmonostearate, or titanium dioxide. In some embodiments, the amount ofplasticizer may be between 5 to 40%, preferably 10 to 25%, relative tothe amount of sustained release polymer.

In an embodiment, an extended release coating is a pore forming systemwhich comprises a water insoluble coating forming polymer and a poreformer. The term “pore former” relates to a readily soluble excipientwhich allows pores to be introduced or permeability of the coating to beincreased, and a diffusion controlled release of the active ingredient.Suitable pore formers are known in the art include for instancehydroxypropylcellulose (HPC (e.g., Klucel™ EF, EXF, LF), orhydroxypropyl methylcellulose (HPMC, e.g., Methocel™ E3/E5, Pharmacoat603™), polyethylen glycol (e.g., Macrogol 1500, 3500, 4000, 6000),poloxamer 188 (Pluronic F68™) or povidone (PVP, e.g., Kollidon K25/K30),a saccharide, e.g., a monosaccharide, such as dextrose, mannose,fructose, a disaccharide, such as sucrose or glucodifructose orcombinations thereof. Preferably the pore former ishydroxypropylcellulose (HPC (Klucel™ EF, EXF, LF), or hydroxypropylmethylcellulose (HPMC, Methocel™ E3/E5, Pharmacoat 603™) polyethylenglycol (Macrogol 1500, 3500, 4000, 6000), poloxamer 188 (Pluronic F68™)or povidone (PVP, Kollidon K25/K30) or combinations thereof. In someembodiments, suitable amounts of pore formers included in coating areequal to ratios of coating polymer to pore former of e.g. 100:20 to100:50, or 100:20 to 100:100, preferably ratios of 100:35 to 100:45,particularly ratios of 100:35 to 100:50 relative to the amount ofcoating forming polymer. In some embodiments, suitable amounts ofcoating forming polymers included are equal to percentages of polymerweight increase of e.g., 4% to 15%, 5% to 15%, preferably 5% to 12%,more preferably 6% to 12% weight of total weight of pharmaceuticalformulation.

In another embodiment, a non-disintegrating extended release carriermatrix comprises matrix forming polymers which enable diffusioncontrolled release of the active ingredient by hydration of the polymer.The extended carrier matrix may contain further excipients, such asbinders and or fillers and process enhancing agents, such as lubricantsand glidants, etc.

The following exemplary matrix forming polymers may be used fordiffusion controlled release: sodium alginate, polyacrylic acids (or“carbomers”), carboxmethylcellulose sodium, (or “CMC sodium”),methylcellulose, ethylcellulose and cellulose acetate or polyacrylates,e.g., ammonio methacrylate copolymers (Eudragit RS/RL), hydroxypropylmethylcellulose (“HPMC”) of different viscosity grades (i.e., averagepolymer chain lengths) and combinations thereof, e.g., Methocel™ CRgrades, hydroxypropyl cellulose, e.g. Klucel™ HF/MF, polyoxyethylene,e.g., Polyox™ or polyvinylpyrrolidone (“PVP”), e.g., PVP K60, K90,carrageenan, such as Viscarin™ GP-209/GP-379, or combinations thereof.Combining of matrix forming polymers allows adjusting the dissolutionrate of the active ingredient according to the need.

In some embodiments, a non-disintegrating extended release matrix isformed with excipients, which enable release of the active ingredient bya controlled erosion. The erosion controlled matrices may containlipophilic matrix formers, and also further excipients, such as fillers,disintegrants and process enhancing agents, such as lubricants andglidants. Exemplary lipophilic matrix forming excipients related to thismatrix type include lipophilic excipients, such as glycerylmonostearate, e.g., Cutina GMS, glyceryl behenate, e.g., Compritol 888ATO, stearyl alcohol, stearic acid, hart fat, e.g., Gelucire™, orVitamin E polyethylen glycol succinate, e.g., Speziol TPGS orcombinations thereof.

Exemplary suitable binders, fillers or further excipients include, butare not limited to, mannitol, pregelatinized starch, microcrystallinecellulose, lactose, calcium phosphate, talc, titanum dioxide,triethylcitrate, Aerosil, antioxidants such as e.g., BHT, desiccants anddisintegrant such as e.g., crospovidone or sodium starch glycolate,starch, or croscarmellose.

In an embodiment, a stable extended release formulation comprises anmTOR inhibitor disclosed herein, e.g., rapamycin or RAD001, in a fastdissolving/disintegrating matrix, e.g., in form of a solid dispersion asdescribed herein, in combination with functional layers or coatingswherein at least one of the functional layer(s) or coating(s) hasrelease controlling behavior enabling extended release of the activeingredient. In another embodiment, a stable extended release formulationcomprises an mTOR inhibitor disclosed herein, e.g., rapamycin or RAD001,in the extended release matrix which, optionally, can further containfunctional layers or coatings, such as protective or sustained releaselayers or coatings. In some embodiments, the coating, e.g., the extendedrelease coating may have a thickness in the range of 10 to 100 μm, e.g.,10 to 50 μm (assessed by confocal RAMAN spectroscopy).

In some embodiments, the formulation of an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, is in form of a multi-particulatedelivery system. In some embodiments, a multi-particulate drug deliverysystem is an oral dosage form consisting of multiple, small discretedose units. In such systems, the dosage form of the drug substances suchas capsule, tablets, sachet or stickpack, may contain a plurality ofsubunits, typically consisting of tens to hundreds or even up tothousands of spherical particles with diameter of 0.05-2.00 mm.Formulations of the size 1.5-3 mm, e.g., minitablets, present anotheralternative. The dosage form may be designed to disintegrate rapidly inthe stomach releasing the multi-particulates. Without wishing to bebound by a particular theory, it is thought that the multi-particulatesare spread in the gastro-intestinal lumen and will be emptied graduallyfrom the stomach releasing the drug substance in a controlled manner.

In one embodiment, the formulation of an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, e.g., in form of multi-particulatedelivery system, comprises an mTOR inhibitor as active ingredient, e.g.,dissolved or dispersed in the core of the particle, (e.g., a bead,pellet, granule or minitablet), or in a layer surrounding an inert coreof the particle. The active ingredient can be for instance be embeddedin an extended release matrix, preferably comprising a hydrophilic orlipophilic matrix forming excipients, or embedded in a fastdisintegrating and/or dissolving matrix in combination with functionallayer(s) and top coating(s) wherein at least one of the functionallayer(s) or top coating(s) comprises a coating forming polymer enablingdiffusion controlled extended release of the active ingredient.Optionally, a protection layer for improving stability of the activeingredient separates the matrix containing the active substance fromfunctional layers or top coatings, to ensure stability of the drugproduct.

In a another embodiment, the formulation of an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, e.g., in form of a multi-particulatedelivery system, comprises an mTOR inhibitor as active ingredient and anouter coating layer comprising an insoluble polymer and a solublecomponent as pore former, and optionally further functional layers. Forthe purpose of the present invention the terms “outer layer” is a layerlocated towards to the outside of a particle and may be coated with afurther layer(s) or may be a top coating. The terms “outer layer”,“coating layer” or “top coat” may be used interchangeably depending onthe context in which the terms are used.

In one embodiment, the particles comprise one or several top coatsenabling extended release of the active ingredient. Top coats typicallyare final layers with release controlling behavior, which are enclosingeach particle of the multi-particulates separately.

In an embodiment, the formulation of an mTOR inhibitor disclosed herein,e.g., rapamycin or RAD001, comprises an outer layer or a top coatingthat controls the release by the diffusion of the drug through thecoating layer which is permeable, optionally by the formation of poresin the insoluble polymer layer, or alternatively solely by the hydrationof the insoluble polymer, or that controls the release by a combinationof a pore former and hydration of the insoluble polymer. The polymer isinsoluble independently from pH, and optionally contains water solublepore former. The release rate is affected by the extent of poreformation after the pore former is dissolved. The insoluble coatingpolymer can be cellulose ethers such as ethylcellulose and celluloseacetate or polyacrylates, e.g., ammonio methacrylate copolymers(Eudragit RS/RL). Suitable pore formers include water soluble celluloseethers, for instance hydroxypropylcellulose (HPC (Klucel™ EF, EXF, LF)or hydroxypropyl methylcellulose (HPMC, Methocel™ E3/E5, Pharmacoat603™), polyethylen glycol (Macrogol 1500, 3500, 4000, 6000), poloxamer188 (Pluronic F68™) or povidone (PVP, Kollidon K12, K25, K30). Forinstance, water soluble pore former can be mixed with insoluble polymerin a ratio of 2:1 to 1:10, e.g. 1:1 to 1:5, 1:3 or 1:5. In anembodiment, the pore former to insoluble polymer ratio is HPC, e.gKlucel™ EF, EXF, LF or HMPC 3 cP, e.g., Methocel™ E3, in a ratio of 1:1to 1:4, e.g., about 1:1, 1:1.2, 1:1.5 or 1:2. Exemplary insolublepolymers include, but are not limited to ethylcellulose (EC, Aqualon ECN10™) in combination with a pore former. In some embodiments, withoutthe use of a pore former, the combination of the insoluble polymersammoniomethacrylate copolymer Type A (Eudragit RS) andammonio-methacrylate copolymer Type B (Eudragit RL) may be at ratios of1:2 to 9:1, preferably 1:1 to 4:1.

A sustained release top coat(s) may achieve release of majority of theactive substance into the small intestine and allows protection of theactive substance from stomach fluids and minimizes the exposure of theactive substance to the mouth, esophagus and stomach.

In one embodiment, the formulation of an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, comprise a drug substance containingmatrix, e.g., fast disintegrating and/or dissolving matrix layer or inan extended release matrix layer, e.g., on a starter core such as beads,pellets or granules, which can consist of one or more components, and inwhich the active ingredient is dispersed or dissolved. For instance,amorphous or crystalline mTOR inhibitor, e.g., rapamycin or RAD001, canbe dispersed or dissolved in the matrix in a ratio from 1:100 to 100:1in the matrix, e.g., 1:50 to 5:1; or 1:50 to 1:1 by weight, or 1:5 to2:3, or 1:10 to 1:5 by weight (as to the matrix former).

In an embodiment, the drug substance containing matrix is layered ontothe surface of starter cores. The layer may be built by spraying adispersion or solution of the matrix components and the drug substanceon to particles of uniform, regular size and shape in a fluid bedprocess. Alternatively, powder mixtures of the matrix components can belayered using a rotating disk processor. Starter cores have an averageparticle size 0.1 to 2.5 mm. They can be single crystals, e.g., sucrose,or granular agglomerates manufactured by fluid bed granulation, arotorgranulation, extrusion and spheronization, or a compaction process.In some embodiments, minitablets can be used as starter cores. Inparticular embodiments, the starter cores have a spherical shape andconsist of inert material such as sucrose and starch (Sugar Spheres,Suglets™, Non-pareils), mannitol (e.g. MCells™), lactose (e.g., spraydried lactose) or microcrystalline cellulose (e.g., Cellets™).

In another embodiment, the drug substance containing matrix isincorporated in the cores of the particles. The matrix formingexcipients, fillers, and other ingredients for enhancing the process aremixed together with the drug substance. The powder mixtures obtained canbe formulated as particles by using wet extrusion or melt extrusion andsubsequent spheronization, or by compacting the mixtures to minitablets.The matrices formed could be either fast disintegrating/dissolvingmatrices, or non-disintegrating matrices with extended releaseproperties built with hydrophilic or lipophilic matrix formingexcipients.

In an embodiment, multi-particulates consisting of a hydrophilic,non-disintegrating matrix which contains the drug substance or a soliddispersion thereof, are prepared by mixing the active ingredient, afiller, e.g., lactose, together with hydrophilic, hydrogel formingpolymers with different viscosities, a glidant, and a lubricant. In someembodiments, the hydrophilic, hydrogel forming polymer may be, forexample hydroxypropyl methylcellulose, with low viscosity grade of lessthan 20 mPas for a 2% by weight aqueous solution, e.g., Methocel E5,combined with hydroxypropyl methylcellulose grade with high viscosity ofmore than 100 mPas for a 2% by weight aqueous solution, e.g., MethocelK100. The powder mixture is then compressed on the tabletting machine toobtain minitablets. Alternatively, the powder mixture can be wetted withorganic solvent, e.g., ethanol, and then extruded and spheronized forobtaining multi-particulates.

In another embodiment, multi-particulates consisting of a lipophilic,non-disintegrating matrix which contains the drug substance or a soliddispersion thereof are prepared by mixing the active ingredient,lipophilic, meltable, matrix forming excipients, and fillers. Themixture is processed by melting and mixing in an extruder. The obtainedextudate strands are cut into particles and are optionally spheronized.The lipophilic excipients used are for example Vitamin E polyethylenglycol succinate (Vit E TPGS, e.g., Kolliphor TPGS Pharma from BASF)solely, or in combination with glycerol monostearate (GMS, e.g.,Kolliwax GMS fromBASF) at ratios of 9:1 to 1:9.

In some embodiments, an extended release formulation of an mTORinhibitor disclosed herein, e.g., rapamycin or RAD001, reduces the peakconcentration (C_(max)) to concentration at 24 hours post-dose (C_(24h))ratio after a single dose administration in 24 healthy subjects, ascompared to an immediate release tablet, e.g., a rapamycin or RAD001immediate release tablet available to patients (Final Market Image or“FMI” tablets). In some embodiments, the C_(max)/C_(24h) ratio isdecreased, e.g., as measured by pharmacokinetic model simulations. Anadvantage of a reduced C_(max)/C_(min) ratio is that, with theappropriate dose based on the bioavailability of the mTOR inhibitorrelative to an FMI formulation, the concentration of mTOR inhibitor maybe maintained above the lower therapeutic range of drug (for sufficientefficacy) and at the same time distance away from the upper therapeuticrange of drug (concentration region of toxicity). Thus, in someembodiments, an extended release formulation of an mTOR inhibitordisclosed herein, e.g., rapamycin or RAD001, is able to improve thesafety profile of the mTOR inhibitor without affecting its efficacy. Inan embodiment, a C_(max)/C_(24h) (thus C_(max)/C_(min)) ratio inpatients having been administered an extended release formulation of anmTOR inhibitor disclosed herein, e.g., rapamycin or RAD001, is <5 or <4,e.g. 3.5±1 or 3±0.5.

In an embodiment, an mTOR inhibitor disclosed herein, e.g., rapamycin orRAD001, is contained in a layer separate from the functional layer ortop coat controlling the extended release properties of the formulation.Such layer may be made of any substance which is suitable for dispersingor dissolving the mTOR inhibitor. In an embodiment, the layer comprisingthe mTOR inhibitor is made of a hydrophilic carrier matrix. The carriermatrix may be embedding the active ingredient and protecting it againstdegradation. Suitable matrix formers include, but are not limited to,hydrophilic polymers, e.g. HPMC type 2910 or type 2280, HPC, HEC, MEC,MHEC, povidone, which can be dissolved or rapidly dispersed in water. Inone embodiment, the matrix layer is in form of a solid dispersion, forinstance as described in WO97/03654 or WO03/028705, the entire contentsof each of which are incorporated herein by reference.

In an embodiment, the fast dissolving/disintegrating carrier matrix foran mTOR inhibitor disclosed herein, e.g., rapamycin or RAD001, is inform of a solid dispersion. In some embodiments, the solid dispersioncomprises a carrier, e.g., a water-soluble polymer, for example one or amixture of the following polymers may be used:

-   -   hydroxypropylmethylcellulose (HPMC), e.g., Hypromellose type        2910, which is available as Methocel™ E from Dow Chemicals or        Pharmacoat™ from Shin Etsu. Good results may be obtained using        HPMC with a low apparent viscosity, e.g., below 100 cps as        measured at 20° C. for a 2% by weight aqueous solution, e.g.        below 50 cps, preferably below 20 cps, for example HPMC 3 cps;    -   polyvinylpyrrolidone (povidone, PVP), e.g., PVP K25, K30 or PVP        K12. PVP is available commercially, for example, as Kollidon®        from the BASF company or as Plasdone® from ISP company. A PVP        having an average molecular weight between about 8,000 and about        50,000 Daltons is preferred, e.g., PVP K30;    -   hydroxypropylcellulose (HPC), e.g., Klucel EF/LF/J For a        derivative thereof. Examples of HPC derivatives include those        having low dynamic viscosity in aqueous media, e.g., water, e.g.        below about 400 cps as measured in a 5% aqueous solution at        25° C. Preferred HPC derivatives an average molecular weight        below about 200,000 Daltons, e.g., between 80,000 and 140,000        Daltons. Examples of HPC available commercially include Klucel®        LF, Klucel® EF and Klucel® JF from the Hercules Aqualon company;        and Nisso® HPC-L available from Nippon Soda Ltd;    -   a polyethylene glycol (PEG). Examples include PEGs having an        average molecular weight between 1000 and 9000 Daltons, e.g.        between about 1800 and 7000, for example PEG 2000, PEG 4000, or        PEG 6000 (Handbook of Pharmaceutical Excipients, p. 355-361);    -   a saturated polyglycolised glyceride, available for example, as        Gelucire®, e.g., Gelucire® 44/14, 53/10, 50/13, 42/12, or 35/10        from the Gattefossé company; or    -   a cyclodextrin, for example a β-cyclodextrin or an        α-cyclodextrin. Examples of suitable β-cyclodextrins include,        but are not limited to, methyl-β-cyclodextrin;        dimethyl-β-cyclodextrin; hydroxypropyl-β-cyclodextrin;        glycosyl-β-cyclodextrin; maltosyl-β-cyclodextrin;        sulfo-β-cyclodextrin; a sulfo-alkylethers of β-cyclodextrin,        e.g. sulfo-C₁₋₄-alkyl ethers. Examples of α-cyclodextrins        include, but are not limited to, glucosyl-α-cyclodextrin and        maltosyl-α-cyclodextrin.

In one embodiment, an mTOR inhibitor-containing layer containsantioxidant in a ratio of 1:1000 to 1:1 related to the amount of drugsubstance. The antioxidant may also be present in other functionallayers, e.g., at concentration of 0.1 to 10%, preferably 0.1 to 1%.Suitable antioxdants include, but are not limited to, butyl hydroxyltoluol, butyl hydroxy anisol, ascorbyl palmitate, tocopherol, vitamin Epolyethylene glycol succinate. In a particular embodiment, theantioxidant is butyl hydroxyl toluol.

In one embodiment, a protection layer separates the layer containing theactive substance from other functional layers, such as e.g., the topcoating, to enhance stability of the of the drug product. The drugsubstance is stabilized by excluding any direct contact with the topcoating. The protection layer also acts as diffusion barrier preventingany components in the top coating, e.g., polymer by-products orplasticizers, which can migrate through the layers, from getting indirect contact with the active. Beside the polymers, which are used alsoas matrix formers (e.g., the matrix formers described above), highcontent, of inorganic pigments or anti-tacking agents such as talcand/or titanium dioxide, e.g., 10 to 100%, e.g., 20 to 50%, relative tothe applied amount of polymer, contribute to the barrier function. Theprotection layer thickness can be adjusted to gain optimized drugproduct stability.

In another embodiment, the mTOR inhibitor, e.g., rapamycin or RAD001, isdirectly embedded in the extended release carrier matrix.

In some embodiments, a formulation comprising an mTOR inhibitordisclosed herein, e.g., rapamycin or RAD001, contains stronglyhygroscopic excipients, which are able to bind water moisture enclosedin the formulation working as an internal desiccant. Adsorbents such ase.g., crospovidone, croscarmellose sodium, sodium starch glycolate, orstarch can be used. For example, in some embodiments, crospovidone isused as tablet disintegrant, e.g., at 2% to 25% crospovidone. Theadsorbent, e.g., crospovidone, may be part of the powder mixtures usedfor wet and melt extrusion, part of the powder blend for compressing theminitablets, part of powder blend for tabletting the multi-particulates,and/or directly added to the multi-particulates in a sachet or capsulefilling process.

In one aspect, an mTOR inhibitor disclosed herein, e.g., rapamycin orRAD001, is present in a particle (e.g., 0.1 to 0.5 mm), bead, pellet(e.g., 0.2 to 2 mm) or mini-tablet (e.g., 1.5 to 3 mm), with a low watermoisture content of less than 5% in total, e.g., less than 3% or lessthan 2.5% in total.

In some embodiments, a pharmaceutical compositions, e.g., amulti-particulate delivery system of an mTOR inhibitor disclosed herein,e.g., rapamycin or RAD001, can be formulated into a drug product such ase.g., capsules (e.g., HPMC or Hart Gelatine capsules), or filled intosachets or stick-packs, or formulated as tablets which release theparticles upon disintegration.

In some embodiments, the primary packaging, such as sachets, stickpacks,blisters or bottles may include an water sorbing ingredient, e.g.,silica gel, which reduces or stabilizes the water moisture content ofthe drug product during shelf life storage and/or in during in-use time.

Provided formulations may comprise and/or release multiple pellets,granules or minitablets.

In some embodiments, provided formulations, e.g., multi-particulatesformulations, can be prepared by extruding and spheronizing a mixture ofthe matrix forming excipients together with the drug substance with theaid of heat or wetting liquids, or by compacting minitablets with drugcontaining mixtures, or by layering the drug containing matrix layeronto cores in a fluid bed or rotogranulation process.

In some embodiments, the layer containing the active substance can beprepared by spraying a spray dispersion with organic solvents in whichthe hydrophilic components and the active substance are dispersed ordissolved onto the core material, while concurrently the solvents arecontinuously removed by the aid of heated, dry air. By this process amatrix layer surrounding the cores is formed, e.g., the layer formed isa solid dispersion of the active in polymers such as e.g., HPMC, HPC,HEC.

In one aspect, a provided pharmaceutical formulation may be prepared asfollows: An organic feed mixture for spraying in which the hydrophilicpolymer is dispersed in colloidal manner and an mTOR inhibitor disclosedherein, e.g., rapamycin or RAD001, is dispersed or dissolved, whichprecipitate together as a uniform, smooth layer of solid dispersion uponremoval of the solvent in such a way that they can be coated withmodified release coats. In some embodiments, the obtained drugcontaining multi-particulates can be coated with additional functionallayers and top coatings. A spray dispersion containing coating polymers,lubricants, anti tack agents, pore formers and plastisizers, which aredissolved, dispersed and suspended in organic solvents and mixturesthereof, is sprayed onto the drug containing multi-particulates. Duringprocessing the multi-particulates are kept continuously in a controlledmotion or fluidization, while dry, heated process gas is applied to theproduct bed for evaporating the solvents from the surface of themulti-particulates, where the film layer is formed at a definedtemperature. The film layer thickness can be controlled by the amount ofcoating dispersion sprayed. Final drying is applied for minimizing theresidual solvent content in the layered and coated multi-particulates.

In another aspect, an mTOR inhibitor disclosed herein, e.g., rapamycinor RAD001, may be formulated as part of a high drug load part of anextended release formulation. In some embodiments, the formulationfurther comprises a surfactant. The term “surfactant” can be usedinterchangeably with a “wetting agent” or “detergent” and refers to anon-ionic, ionic, anionic, cationic or amphoteric surfactant, e.g., anon-ionic, ionic, anionic, or amphoteric surfactant. Examples ofsuitable surfactants/wetting agents include, but are not limited to,polyoxyethylene-polyoxypropylene co-polymers and block co-polymersknown, for example, under the trademarks Pluronic or Poloxamer (e.g.poloxamer 188 (Pluronic F68), polyoxyethylene, sorbitan fatty acidesters including mono and tri lauryl, palmityl, stearyl and oleyl estersof the type known under the trade name Tween, polyoxyethylene fatty acidesters including polyoxyethylene stearic acid esters of the type knownunder the trade name Myrj, polyoxyethylene alkyl ethers known under thetrade mark Brij, sodium alkyl sulfates like Soldium lauryl sulphate(SDS) and sulfonates, and sodium alkyl aryl sulfonates, water solubletocopheryl polyethylene glycol succinic acid esters (TPGS), polyglycerolfatty acid esters, alkylene polyol ethers or esters, polyethylene glycolglyceryl fatty acid esters, sterols and derivatives thereof,transesterified, polyoxyethylated caprylic-capric acid glycerides, sugarfatty acid esters, PEG sterol ethers, phospholipids, salts of fattyacids, fatty acid sulfates and sulfonates, salts of fatty acids, fattyacid sulfates and sulfonates, medium or long-chain alkyl, e.g., C₆-C₁₈,ammonium salts, bile acid or salt thereof; for example cholic acid,glycolic acid or a salt, e.g., sodium cholate and polyoxyethylene monoesters of a saturated C₁₀ to C₂₂ fatty acid. In a particular embodimentthe surfactant is polyoxyethylene-polyoxypropylene co-polymer or blockco-polymer, or a water soluble tocopheryl polyethylene glycol succinicacid ester, e.g., a water soluble tocopheryl polyethylene glycolsuccinic acid ester, e.g., Vitamin E polyethylene glycol 1000 succinate(TPGS). In another embodiment the surfactant in the presentpharmaceutical formulation is polyoxyethylene-polyoxypropyleneco-polymer, e.g., poloxamer 188. In yet another embodiment, thepharmaceutical formulation comprises the surfactant sodium alkylsulfate, e.g., sodium lauryl sulfate.

The surfactant or wetting agent may be present in a formulation in aratio to mTOR inhibitor, e.g., rapamycin or RAD001, from 10:1 to 1:200by weight, e.g., 1:1 to 1:100 by weight, 1:2 to 1:8 by weight, 1:4 to1:6 by weight.

In some embodiments, the mTOR inhibitor, e.g., rapamycin or RAD001, isin a high drug load containing first layer, and a surfactant in a secondlayer, wherein the second layer is beneath the first layer, optionallywith additional extended release coating. In some such embodiments, thesurfactant is not poloxamer 188 and TPGS. In some embodiments, thesurfactant or wetting agent in a second layer can form a protectionlayer which separates the active ingredient containing layer from thecoating covering the formulation. The coating covering the formulationmay be an extended release coating.

Other Embodiments

The invention further provides T cell preparations of T cells treatedwith a low, immune enhancing, dose of mTOR inhibitor, as describedherein, e.g., for use in treating a subject with a disease, e.g., alymphoproliferative disease. In some embodiments, the T cells arerecovered from a subject that has been administered a low, immuneenhancing, dose of mTOR inhibitor, as described herein. Suitable methodsof recovering T cells from a subject are known in the art, and includeisolation from peripheral blood or bone marrow by filtration, affinitychromatography, or magnetic labelling and separation. In otherembodiments, the T cells recovered from a subject are treated with alow, immune enhancing, dose of mTOR inhibitor as described herein invitro, e.g., in cell culture. In one embodiment, the T cell preparationis obtained from a subject with a lymphoproliferative disease before thesubject receives a bone marrow or stem cell transplant, and the T cellpreparation is delivered to the subject after the bone marrow or stemcell transplant. The T cell preparation can increase or improve theeffect of the bone marrow or stem cell transplant, e.g., increasinganti-cancer cell immune function and recovery of the immune system. Thelymphoproliferative disease can be a leukemia or a lymphoma, e.g.,chronic myelogenous leukemia (CML), acute myeloid leukemia (AML),Burkitt's lymphoma, diffuse large cell lymphoma, follicular lymphoma,hairy cell lymphoma, mantle cell lymphoma, myelodysplastic syndromes,and non-Hodgkin's lymphoma.

EXAMPLES

The invention is further described in detail by reference to thefollowing experimental examples. These examples are provided forpurposes of illustration only, and are not intended to be limitingunless otherwise specified. Thus, the invention should in no way beconstrued as being limited to the following examples, but rather, shouldbe construed to encompass any and all variations which become evident asa result of the teaching provided herein.

Without further description, it is believed that one of ordinary skillin the art can, using the preceding description and the followingillustrative examples, make and utilize the compounds of the presentinvention and practice the claimed methods. The following workingexamples specifically point out various aspects of the presentinvention, and are not to be construed as limiting in any way theremainder of the disclosure.

Example 1: Effects of mTOR Inhibition on Immunosenescence in the Elderly

One of the pathways most clearly linked to aging is the mTOR pathway.The mTOR inhibitor rapamycin has been shown to extend lifespan in miceand improve a variety of aging-related conditions in old mice (Harrison,D E et al. (2009) Nature 460:392-395; Wilkinson J E et al. (2012) AgingCell 11:675-682; and Flynn, J M et al. (2013) Aging Cell 12:851-862).Thus, these findings indicate that mTOR inhibitors may have beneficialeffects on aging and aging-related conditions in humans.

An age-related phenotype that can be studied in a short clinical trialtimeframe is immunosenescence. Immunosenescence is the decline in immunefunction that occurs in the elderly, leading to an increasedsusceptibility to infection and a decreased response to vaccination,including influenza vaccination. The decline in immune function with ageis due to an accumulation of immune defects, including a decrease in theability of hematopoietic stem cells (HSCs) to generate naïvelymphocytes, and an increase in the numbers of exhausted PD-1 positivelymphocytes that have defective responses to antigenic stimulation(Boraschi, D et al. (2013) Sci. Transl. Med. 5:185ps8; Lages, C S et al.(2010) Aging Cell 9:785-798; and Shimatani, K et al., (2009) Proc. Natl.Acad. Sci. USA 106:15807-15812). Studies in elderly mice showed that 6weeks of treatment with the mTOR inhibitor rapamycin rejuvenated HSCfunction leading to increased production of naïve lymphocytes, improvedresponse to influenza vaccination, and extended lifespan (Chen, C et al.(2009) Sci. Signal. 2:ra75).

To assess the effects of mTOR inhibition on human aging-relatedphenotypes and whether the mTOR inhibitor RAD001 amelioratesimmunosenescence, the response to influenza vaccine in elderlyvolunteers receiving RAD001 or placebo was evaluated. The findingspresented herein suggest that RAD001 enhanced the response to influenzavaccine in elderly volunteers at doses that were well tolerated. RAD001also reduced the percentage of programmed death (PD)-1 positive CD4 andCD8 T lymphocytes that accumulate with age. These results show that mTORinhibition has beneficial effects on immunosenescence in elderlyvolunteers.

As described herein, a 6 week treatment with the mTOR inhibitor RAD001,an analog of rapamycin, improved the response to influenza vaccinationin elderly human volunteers.

Methods

Study Population

Elderly volunteers >=65 years of age without unstable underlying medicaldiseases were enrolled at 9 sites in New Zealand and Australia.Exclusion criteria at screening included hemoglobin <9.0 g/dL, whiteblood cell count <3,500/mm³, neutrophil count <2,000/mm³, or plateletcount <125,000/mm³, uncontrolled diabetes, unstable ischemic heartdisease, clinically significant underlying pulmonary disease, history ofan immunodeficiency or receiving immunosuppressive therapy, history ofcoagulopathy or medical condition requiring long-term anticoagulation,estimated glomerular filtration rate <30 ml/min, presence of severeuncontrolled hypercholesterolemia (>350 mg/dL, 9.1 mmol/L) orhypertriglyceridemia (>500 mg/dL, 5.6 mmol/L).

Baseline demographics between the treatment arms were similar (Table 2).Of the 218 subjects enrolled, 211 completed the study. Seven subjectswithdrew from the study. Five subjects withdrew due to adverse events(AEs), one subject withdrew consent, and one subject left the study as aresult of a protocol violation.

TABLE 2 Demographic and Baseline characteristics of the Study PatientsRAD001 RAD001 RAD001 Placebo 0.5 mg 5 mg 20 mg pooled Total Populationdaily N = 53 weekly N = 53 weekly N = 53 N = 59 N = 218 Age (Years) Mean(SD) 70.8 (5.0) 72.0 (5.3) 71.4 (5.2) 71.1 (5.1) 71.3 (5.2) GenderMale-n (%) 34 (64%) 27 (51%) 32 (60%) 31 (53%) 124 (57%) BMI* (kg/m2)Mean (SD) 27.4 (4.2) 28.8 (5.0) 28.0 (4.1) 28.0 (4.2) 28.0 (4.4) Race-n(%) Caucasian 48 (91%) 50 (94%) 46 (87%) 54 (92%) 198 (91%) Other 5(9%)3 (6%) 7 (13%) 5 (8%) 20 (9%) *The body-mass index is weight inkilograms divided by the square of the height in meters Study Design andConduct

From December 2011 to April 2012, 218 elderly volunteers were enrolledin a randomized, observer-blind, placebo-controlled trial. The subjectswere randomized to treatment arms using a validated automatedrandomization system with a ratio of RAD001 to placebo of 5:2 in eachtreatment arm. The treatment arms were:

RAD001 0.5 mg daily or placebo

RAD001 5 mg weekly or placebo

RAD001 20 mg weekly or placebo

The trial was observer-blind because the placebo in the RAD001 0.5 mgdaily and 20 mg weekly cohorts differed slightly from the RAD001 tabletsin those cohorts. The study personnel evaluating the subjects did notsee the study medication and therefore were fully blinded. The treatmentduration for all cohorts was 6 weeks during which time subjectsunderwent safety evaluations in the clinic every 2 weeks. After subjectshad been dosed for 4 weeks, RAD001 steady state levels were measuredpre-dose and at one hour post dose. After completing the 6 week courseof study drug, subjects were given a 2 week drug free break to reverseany possible RAD001-induced immunosuppression, and then were given a2012 seasonal influenza vaccination (Agrippal®, Novartis Vaccines andDiagnostics, Siena, Italy) containing the strains H1N1A/California/07/2009, H3N2 A/Victoria/210/2009, B/Brisbane/60/2008. Fourweeks after influenza vaccination, subjects had serum collected forinfluenza titer measurements. Antibody titers to the 3 influenza vaccinestrains as well as to 2 heterologous strains (A/H1N1 strain A/NewJersy/8/76 and A/H3N2 strain A/Victoria/361/11) were measured bystandard hemagglutination inhibition assay (Kendal, A P et al. (1982)Concepts and procedures for laboratory-based influenza surveillance.Atlanta: Centers for Disease Control and Prevention B17-B35). Levels ofIgG and IgM specific for the A/H1N1/California/07/2009 were measured inserum samples taken before and 4 weeks after influenza vaccination asdescribed previously (Spensieri, F. et al. (2013) Proc. Natl. Acad. Sci.USA 110:14330-14335). Results were expressed as fluorescence intensity.

All subjects provided written informed consent. The study was conductedin accordance with the principals of Good Clinical Practice and wasapproved by the appropriate ethics committees and regulatory agencies.

Safety

Adverse event assessment and blood collection for hematologic andbiochemical safety assessments were performed during study visits.Adverse event information was also collected in diaries that subjectsfilled out at home during the 6 weeks they were on study drug. Data onall adverse events were collected from the time of informed consentuntil 30 days after the last study visit. Events were classified by theinvestigators as mild, moderate or severe.

Statistical Analysis

The primary analysis of geometric mean titer ratios was done using anormal Bayesian regression model with non-informative priors. This modelwas fitted to each antibody titer on the log scale. The primary outcomein each model was the Day 84 measurement. The Day 63 measurement wasincluded in the outcome vector. The model fitted using SAS 9.2 procmixed with the prior statement. The covariance structure of the matrixwas considered as unstructured (option type=UN). A flat prior was used.For the secondary analysis of seroconversion rates, logistic regressionwas used.

The intention to treat population was defined as all subjects whoreceived at least one full dose of study drug and who had no majorprotocol deviations impacting efficacy data. 199 out of the total of 218subjects enrolled in the study were in the intention to treatpopulation.

Immunophenotyping

Peripheral blood mononuclear cells were isolated from whole bloodcollected at 3 time points: baseline; after 6 weeks of study drugtreatment; and at the end of study when subjects had been off study drugfor 6 weeks and 4 weeks after influenza vaccination. Seventy-six PBMCsubsets were analyzed by flow cytometry using 8-color immunophenotypingpanels at the Human Immune Monitoring Center at Stanford University, CA,USA as described previously (Maecker, H T et al. (2012) Nat Rev Immunol.12:191-200). Seventy-six PBMC subsets were analyzed by flow cytometryusing 8-color lyophilized immunophenotyping panels (BD Lyoplate, BDBiosciences, San Diego, Calif.). PBMC samples with viability >80% andyield of 2×10⁶ cells or greater were included in the analysis.

Relative changes of the immunophenotypes from baseline to Week 6 ofstudy drug treatment and from baseline to the end of study (Week 12)were calculated for each of the RAD001 dosing cohorts. Student T testwas conducted to examine if the relative change of the immunophenotypesfrom baseline to the two blood sampling time points was significantlydifferent from zero, respectively, within each dosing group afteradjusting for placebo effect. Missing data imputation in treatmenteffect analysis was not conducted. Therefore if a patient has a missingphenotype data at baseline, this patient was not be included in theanalysis for this phenotype. If a patient had a missing phenotype dataat 6 or 12 weeks, then this patient did not contribute to the analysisof this phenotype for the affected timepoint.

608 tests in 76 phenotypes under 3 dosing groups were conducted tocompare the treatment effect against the placebo effect. Stratifiedfalse discovery rate (FDR) control methodology was implemented tocontrol the occurrence of false positives associated with multipletesting yet provide considerably better power. The cell type group wastaken as the stratification factor and conducted FDR (q-value)calculation within each stratum respectively. All null-hypotheses wererejected at 0.05 significance level with corresponding q-value ≤0.1. Themultiple testing adjustment strategy with rejecting at 0.05 significancelevel and corresponding q<0.1 ensured that less than 10% of the findingsare false.

In a second analysis, the immunophenotype changes between pooledtreatment and placebo groups, where all three RAD001 dosing groups werecombined. To determine which immunophenotype changes differed betweenthe treated and placebo groups, within-patient cell count ratios foreach measured phenotype were calculated between baseline and Week 6 ofstudy drug treatment and between baseline and the end of study (Week12). The ratios were log transformed, and analyzed by analysis ofcovariance at each time point in order to detect a difference betweenthe pooled treatment and placebo groups. 152 tests in 76 phenotypes wereperformed to compare the pooled treatment effect against the placeboeffect. Stratified false discovery rate (FDR) control methodology wasimplemented to control the occurrence of false positives associated withmultiple testing yet provide considerably better power (Benjamini, Y. etal. (1995) J. Roy. Statist. 57:289-300; and Sun, L. et al. (2006) Genet.Epidemiol. 30:519-530). The cell type group was taken as thestratification factor and FDR (q-value) calculation was conducted withineach stratum respectively. All null-hypotheses at 0.05 significancelevel and q-value less than 20% were rejected. This can be interpretedas rejecting only those hypotheses with P values less than 0.05 and lessthan 20% probability that the each observed significant result is due tomultiple testing.

Results

In general, RAD001 was well tolerated, particularly the 0.5 mg daily and5 mg weekly dosing regimens. No deaths occurred during the study. Threesubjects experienced four serious adverse events (SAEs) that wereassessed as unrelated to RAD001. The 4 SAEs were retinal hemorrhage ofthe left eye with subsequent blindness in a subject with normal plateletcounts who had completed a 6 week course of 5 mg weekly RAD001 6 weekspreviously; severe back pain in a subject treated with placebo andsevere gastroenteritis in a subject treated with placebo. A list oftreatment-related adverse events (AEs) with an incidence >2% in anytreatment group is provided in Table 3. The most common RAD001-relatedAE was mouth ulcer that, in the majority of cases, was of mild severity.Overall, subjects who received RAD001 had a similar incidence of severeAEs as those treated with placebo. Only one severe AE was assessed asrelated to RAD001 mouth ulcers in a subject treated with 20 mg weeklyRAD001.

TABLE 3 Incidence of treatment-related AEs >2% in any treatment group bypreferred term RAD001 RAD001 RAD001 Placebo, 0.5 mg daily 5 mg weekly 20mg weekly pooled Total N = 53 N = 53 N = 53 N = 59 N = 218 n (%) n (%) n(%) n (%) n (%) Total AE(s) 35  46  109  21  211 Patients with AE(s) 22(41.5%) 20 (37.7%) 27 (50.9%) 12 (20.3%) 81 (37.2%) Mouth ulceration  6(11.3%) 2 (3.8%)  9 (17.0%) 3 (5.1%) 20 (9.2%)  Headache 0 2 (3.8%)  9(17.0%) 1 (1.7%) 12 (5.5%)  Blood cholesterol 2 (3.8%) 2 (3.8%) 2 (3.8%)0 6 (2.8%) increased Diarrhea 1 (1.9%) 4 (7.5%) 1 (1.9%) 0 6 (2.8%)Dyspepsia 0 3 (5.7%) 2 (3.8%) 1 (1.7%) 6 (2.8%) Fatigue 0 2 (3.8%) 4(7.5%) 0 6 (2.8%) Low density lipoprotein 2 (3.8%) 1 (1.9%) 2 (3.8%) 0 5(2.3%) increased Tongue ulceration 3 (5.7%) 1 (1.9%) 0 1 (1.7%) 5 (2.3%)Insomnia 1 (1.9%) 2 (3.8%) 1 (1.9%) 0 4 (1.8%) Dry mouth 0 0 2 (3.8%) 1(1.7%) 3 (1.4%) Neutropenia 0 0 3 (5.7%) 0 3 (1.4%) Oral pain 0 2 (3.8%)1 (1.9%) 0 3 (1.4%) Pruritus 0 2 (3.8%) 1 (1.9%) 0 3 (1.4%)Conjunctivitis 0 2 (3.8%) 0 0 2 (0.9%) Erythema 0 2 (3.8%) 0 0 2 (0.9%)Limb discomfort 0 2 (3.8%) 0 0 2 (0.9%) Mucosal inflammation 0 0 2(3.8%) 0 2 (0.9%) Paresthesia oral 2 (3.8%) 0 0 0 2 (0.9%) Stomatitis 00 2 (3.8%) 0 2 (0.9%) Thrombocytopenia 0 0 2 (3.8%) 0 2 (0.9%) Urinarytract infection 0 0 2 (3.8%) 0 2 (0.9%)

The ability of RAD001 to improve immune function in elderly volunteerswas evaluated by measuring the serologic response to the 2012 seasonalinfluenza vaccine. The hemagglutination inhibition (HI) geometric meantiters (GMT) to each of the 3 influenza vaccine strains at baseline and4 weeks after influenza vaccination are provided in Table 4. The primaryanalysis variable was the HI GMT ratio (4 weeks postvaccination/baseline). The study was powered to be able to demonstratethat in at least 2 out of 3 influenza vaccine strains there was 1) a≥1.2-fold GMT increase relative to placebo; and 2) a posteriorprobability no lower than 80% that the placebo-corrected GMT ratioexceeded 1. This endpoint was chosen because a 1.2-fold increase in theinfluenza GMT ratio induced by the MF-59 vaccine adjuvant was associatedwith a decrease in influenza illness (Iob, A et al. (2005) EpidemiolInfect 133:687-693).

TABLE 4 HI GMTs for each influenza vaccine strain at baseline and at 4weeks after influenza vaccination Influenza RAD001 RAD001 5 mg RAD001 20mg Vaccine 0.5 mg daily weekly weekly Placebo Strain Time N = 50 N = 49N = 49 N = 55 A/H1N1 GMT (CV %) Baseline 102.8 (186.9) 84.2 (236.4) 90.1(188.4) 103.2 (219.7) Week 4 190.2 (236.9) 198.73(195.6) 129.7 (175.9)169.4 (259.8) GMT ratio 2.6 (302.5) 2.5 (214.3) 1.8 (201.5) 2.0 (132.7)(CV %) A/H3N2 GMT (CV %) Baseline 106.8 (168.2) 126.04 (162.6) 137.1(211.5) 131.7 (162.3) Week 4 194.4 (129.1) 223.0 (118.8) 223.0 (163.6)184.3 (153.2) GMT ratio 2.1 (152.6) 2.0 (189.2) 2.1 (277.3) 1.6 (153.6)(CV %) B GMT (CV %) Baseline 44.2 (96.6) 64.8 (87.3) 58.0 (156.0) 57.0(112.6) Week 4 98.4 (94.8) 117.3 (99.9) 99.2 (124.1) 114.6 (136.7) GMTratio 2.5 (111.2) 2.2 (112.8) 2.1 (126.5) 2.2 (109.2) (CV %) Baselineindicates 2 weeks prior to influenza vaccination Week 4 indicates 4weeks after influenza vaccination N is number of subjects per cohort GMTis geometric mean titer GMT ratio is the GMT at week 4 postvaccination/GMT at baseline CV % indicates coefficient of variation

In the intent-to-treat (ITT) population, the low, immune enhancing, doseRAD001 (0.5 mg daily or 5 mg weekly) cohorts but not higher dose (20 mgweekly) cohort met the primary endpoint of the study (FIG. 1A). Thisdemonstrates that there is a distinct immunomodulatory mechanism ofRAD001 at the lower doses, and that at the higher dose the knownimmunosuppressive effects of mTOR inhibition may come into play.Furthermore, the results suggest a trend toward improved immune functionin the elderly after low, immune enhancing, dose RAD001 treatment.

In a subgroup analysis, the subset of subjects with low baselineinfluenza titers (≤1:40) experienced a greater RAD001-associatedincrease in titers than did the ITT population (FIG. 1B). These datashow that RAD001 is particularly effective at enhancing the influenzavaccine response of subjects who did not have protective (>1:40) titersat baseline, and therefore were at highest risk of influenza illness.

Scatter plots of RAD001 concentration versus increase in titer to eachinfluenza vaccine strain show an inverse exposure/response relationship(FIG. 2). Modeling and simulation based on mTOR mediated phosphorylationof S6 kinase (S6K) predicts that the 20 mg weekly dosing regimeninhibits mTOR-mediated S6K activity almost completely, the 5 mg weeklydosing regimen inhibits S6K activity by over 50%, and the 0.5 mg dailydosing regiment inhibits S6K phosphorylation by approximately 38% duringthe dosing interval (Tanaka, C et al. (2008) J. Clin. Oncol26:1596-1602). Thus, partial mTOR inhibition, e.g., mTOR-mediated S6Kphosphorylation, with low, immune enhancing, dose RAD001 may be as, ifnot more effective, than near complete mTOR inhibition with high doseRAD001 at enhancing the immune response of the elderly.

Rates of seroconversion 4 weeks after influenza vaccination were alsoevaluated. Seroconversion was defined as the change from a negativepre-vaccination titer (i.e., HI titer <1:10) to post-vaccination HItiter≥1:40 or at least 4-fold increase from a non-negative (≥1:10)pre-vaccination HI titer. In the intention-to-treat population,seroconversion rates for the H3N2 and B strains were increased in theRAD001 as compared to the placebo cohorts although the increases did notmeet statistical significance (Table 5). In the subpopulation ofsubjects with baseline influenza titers <=1:40, RAD001 treatment alsoincreased the rates of seroconversion to the H3N2 and B strains, andthese results reached statistical significance for the B strain in the0.5 mg daily dosing cohort. These data further show that RAD001 enhancedthe serologic response to influenza vaccination in the elderly.

TABLE 5 Percent of subjects with seroconversion to influenza 4 weeksafter vaccination Placebo 0.5 mg 5 mg 20 mg N = 54 N = 48 N = 49 N = 48Intention to Treat Population H1N1 24 27 27 17 H3N2 17 27 24 25 B 17 2722 19 Subjects with Baseline Titers <=40 H1N1 40 42 45 36 H3N2 42 64 5371 B 16  40* 33 28 *Odds ratio for seroconversion between RAD001 andPlacebo significantly different than 1 (two-sided p-value < 0.05obtained by logistic regression with treatment as fixed effect)

Current seasonal influenza vaccines often provide inadequate protectionagainst continuously emerging strains of influenza that present asvariants of previously circulating viruses. However, mice vaccinatedagainst influenza in the presence of the mTOR inhibitor rapamycin, ascompared to placebo, developed a broader serologic response toinfluenza. The broader serologic response included antibodies toconserved epitopes expressed by multiple subtypes of influenza thatprovided protection against infection with heterologous strains ofinfluenza not contained in the vaccine (Keating, R et al. (2013) NatImmunology 14:2166-2178). To determine if RAD001 broadened the serologicresponse to influenza in the elderly volunteers, HI titers to 2heterologous strains of influenza not contained in the influenza vaccine(A/H1N1 strain A/New Jersey/8/76 and A/H3N2 strain A/Victoria/361/11)were measured. The increase in the HI GMT ratios for the heterologousstrains was higher in the RAD001 as compared to placebo cohorts (FIG.3). In addition, seroconversion rates for the heterologous strains werehigher in the RAD001 as compared to placebo cohorts. The increase inseroconversion rates in the 5 and 20 mg weekly RAD001 dosing cohorts wasstatistically significant for the H3N2 heterologous strain (Table 6).The H3N2 seroconversion rate for the pooled RAD001 cohorts was 39%versus 20% for the placebo cohort (p=0.007). The results presentedherein suggest that mTOR inhibition broadens the serologic response ofelderly volunteers to influenza vaccination, and increases antibodytiters to heterologous strains of influenza not contained in theseasonal influenza vaccine.

Broadened serologic response to heterologous strains of influenza inmice treated with rapamycin has been associated with an inhibition ofclass switching in B cells and an increase in anti-influenza IgM levels(Keating, R. et al. (2013) Nat Immunol 14:2166-2178). However,inhibition of class switching may not be involved in the broadenedserologic response in humans treated with RAD001 because thepost-vaccination anti-influenza IgM and IgG levels did not differbetween RAD001 and placebo treated cohorts (FIGS. 4A and 4B,respectively).

TABLE 6 Percentage of subjects who seroconvert to heterologous strainsof influenza 4 weeks after seasonal influenza vaccination RAD001 RAD001RAD001 Placebo, 0.5 mg 5 mg 20 mg pooled daily weekly weekly A/H1N1strain:  7% 17% 16% 8% A/NewJersey/8/76 A/H3N2 strain: 20% 38%  39%*40%* A/Victoria/361/11 *Odds ratio for seroconversion between RAD001 andPlacebo significantly different than 1 (two-sided p-value < 0.05obtained by logistic regression with treatment as fixed effect)

To address the mechanism by which RAD001 enhanced immune function inelderly volunteers, immunophenotyping was performed on PBMC samplesobtained from subjects at baseline, after 6 weeks of study drugtreatment and 4 weeks after influenza vaccination (6 weeks after studydrug discontinuation). Although the percentage of most PBMC subsets didnot differ between the RAD001 and placebo cohorts, the percentage ofPD-1 positive CD4 and CD8 cells was lower in the RAD001 as compared toplacebo cohorts (FIGS. 5A, 5B, and 5C). PD-1 positive CD4 and CD8 cellsaccumulate with age and have defective responses to antigen stimulationbecause PD-1 inhibits T cell receptor-induced T cell proliferation,cytokine production and cytolytic function (Lages, C S et al. (2010)Aging Cell 9:785-798). There was an increase in percentage of PD-1positive T cells over time in the placebo cohort. At week 12 (4 weekspost-vaccination) this increase may have been due to influenzavaccination since influenza virus has been shown to increase PD-1positive T cells (Erikson, J J et al. (2012) JCI 122:2967-2982). Howeverthe percentage of CD4 PD-1 positive T cells decreased from baseline atweek 6 and 12 in all RAD001 cohorts (FIG. 5A). The percentage of CD8PD-1 positive cells also decreased from baseline at both week 6 and 12in the two lower dose RAD001 cohorts (FIG. 5B). The percentage of PD-1negative CD4 T cells was evaluated and increased in the RAD001 cohortsas compared to the placebo cohorts (FIG. 5C).

Under more stringent statistical analysis, where the results from theRAD001 cohorts were pooled and adjusted for differences in baseline PD-1expression, there was a statistically significant decrease of 30.2% inPD-1 positive CD4 T cells at week 6 in the pooled RAD cohort (n=84)compared to placebo cohort (n=25) with p=0.03 (q=0.13) (FIG. 6A). Thedecrease in PD-1 positive CD4 T cells at week 12 in the pooled RAD ascompared to the placebo cohort is 32.7% with p=0.05 (q=0.19). FIG. 6Bshows a statistically significant decrease of 37.4% in PD-1 positive CD8T cells at week 6 in the pooled RAD001 cohort (n=84) compared to placebocohort (n=25) with p=0.008 (q=0.07). The decrease in PD-1 positive CD8 Tcells at week 12 in the pooled RAD001 as compared to the placebo cohortis 41.4% with p=0.066 (q=0.21). Thus, the results from FIGS. 5 and 6together suggest that the RAD001-associated decrease in the percentageof PD-1 positive CD4 and CD8 T cells may contribute to enhanced immunefunction.

Conclusion

In conclusion, the data presented herein show that the mTOR inhibitorRAD001 ameliorates the age-related decline in immunological function ofthe human elderly as assessed by response to influenza vaccination, andthat this amelioration is obtained with an acceptable risk/benefitbalance. In a study of elderly mice, 6 weeks treatment with the mTORinhibitor rapamycin not only enhanced the response to influenzavaccination but also extended lifespan, suggesting that amelioration ofimmunosenescence may be a marker of a more broad effect on aging-relatedphenotypes.

Since RAD001 dosing was discontinued 2 weeks prior to vaccination, theimmune enhancing effects of RAD001 may be mediated by changes in arelevant cell population that persists after discontinuation of drugtreatment. The results presented herein show that RAD001 decreased thepercentage of exhausted PD-1 positive CD4 and CD8 T cells as compared toplacebo. PD-1 expression is induced by TCR signaling and remains high inthe setting of persistent antigen stimulation including chronic viralinfection. While not wishing to be bound by theory, is possible thatRAD001 reduced chronic immune activation in elderly volunteers andthereby led to a decrease in PD-1 expression. RAD001 may also directlyinhibit PD-1 expression as has been reported for the immunophilincyclosporine A (Oestreich, K J et al. (2008) J Immunol. 181:4832-4839).A RAD001-induced reduction in the percentage of PD-1 positive T cells islikely to improve the quality of T cell responses. This is consistentwith previous studies showing that mTOR inhibition improved the qualityof memory CD8 T cell response to vaccination in mice and primates(Araki, K et al. (2009) Nature 460:108-112). In aged mice, mTORinhibition has also been shown to increase the number of hematopoieticstem cells, leading to increased production of naïve lymphocytes (Chen,C et al. (2009) Sci Signal 2:ra75). Although significant differences inthe percentages of naïve lymphocytes in the RAD001 versus placebocohorts were not detected in this example, this possible mechanism maybe further investigated.

The mechanism by which RAD001 broadened the serologic response toheterologous strains of influenza may be further investigated. Rapamycinhas also been shown to inhibit class switching in B cells afterinfluenza vaccination. As a result, a unique repertoire ofanti-influenza antibodies was generated that promoted cross-strainprotection against lethal infection with influenza virus subtypes notcontained in the influenza vaccine (Keating, R et al. (2013) NatImmunol. 14:2166-2178). The results described herein did not show thatRAD001 altered B cell class switching in the elderly subjects who haddiscontinued RAD001 2 weeks prior to influenza vaccination. Although theunderlying mechanism requires further elucidation, the increasedserologic response to heterologous influenza strains described hereinmay confer enhanced protection to influenza illness in years when thereis a poor match between the seasonal vaccine and circulating strains ofinfluenza in the community.

The effect of RAD001 on influenza antibody titers was comparable to theeffect of the MF59 vaccine adjuvant that is approved to enhance theresponse of the elderly to influenza vaccination (Podda, A (2001)Vaccine 19:2673-2680). Therefore, RAD001-driven enhancement of theantibody response to influenza vaccination may translate into clinicalbenefit as demonstrated with MF59-adjuvanted influenza vaccine in theelderly (Job, A et al. (2005) Epidemiol Infect. 133:687-693). However,RAD001 is also used to suppress the immune response of organ transplantpatients. These seemingly paradoxical findings raise the possibilitythat the immunomodulatory effects of mTOR inhibitors may be dose and/orantigen-dependent (Ferrer, I R et al. (2010) J Immunol. 185:2004-2008).A trend toward an inverse RAD001 exposure/vaccination responserelationship was seen herein. It is possible that complete mTORinhibition suppresses immune function through the normalcyclophilin-rapamycin mechanism, whereas partial mTOR inhibition, atleast in the elderly, enhances immune function due to a distinctaging-related phenotype inhibition. Of interest, mTOR activity isincreased in a variety of tissues including hematopoietic stem cells inaging animal models (Chen C. et al. (2009) Sci Signal 2:ra75 and Barns,M. et al. (2014) Int J Biochem Cell Biol. 53:174-185). Thus, turningdown mTOR activity to levels seen in young tissue, as opposed to morecomplete suppression of mTOR activity, may be of clinical benefit inaging indications.

The safety profile of mTOR inhibitors such as RAD001 in the treatment ofaging-related indications has been of concern. The toxicity of RAD001 atdoses used in oncology or organ transplant indications includes rates ofstomatitis, diarrhea, nausea, cytopenias, hyperlipidemia, andhyperglycemia that would be unacceptable for many aging-relatedindications. However, these AEs are related to the trough levels ofRAD001 in blood. Therefore the RAD001 dosing regimens used in this studywere chosen to minimize trough levels. The average RAD001 trough levelsof the 0.5 mg daily, 5 mg weekly and 20 mg weekly dosing cohorts were0.9 ng/ml, below 0.3 ng/ml (the lower limit of quantification), and 0.7ng/ml, respectively. These trough levels are significantly lower thanthe trough levels associated with dosing regimens used in organtransplant and cancer patients. In addition, the limited 6 week courseof treatment decreased the risk of adverse events. These findingssuggest that the dosing regimens used in this study may have anacceptable risk/benefit for some conditions of the elderly. Nonetheless,significant numbers of subjects in the experiments described hereindeveloped mouth ulcers even when dosed as low as 0.5 mg daily. Thereforethe safety profile of low, immune enhancing, dose RAD001 warrantsfurther study. Development of mTOR inhibitors with cleaner safetyprofiles than currently available rapalogs may provide bettertherapeutic options in the future for aging-associated conditions.

Example 2: Enhancement of Immune Response to Vaccine in Elderly Subjects

Immune function declines in the elderly, leading to an increaseincidence of infection and a decreased response to vaccination. As afirst step in determining if mTOR inhibition has anti-aging effects inhumans, a randomized placebo-controlled trial was conducted to determineif the mTOR inhibitor RAD001 reverses the aging-related decline inimmune function as assessed by response to vaccination in elderlyvolunteers. In all cases, appropriate patent consents were obtained andthe study was approved by national health authorities.

The following 3 dosing regimens of RAD001 were used in the study:

20 mg weekly (trough level: 0.7 ng/ml)

5 mg weekly (trough level was below detection limits)

0.5 mg daily (trough level: 0.9 ng/ml)

These dosing regimens were chosen because they have lower trough levelsthan the doses of RAD001 approved for transplant and oncologyindications. Trough level is the lowest level of a drug in the body. Thetrough level of RAD001 associated with the 10 mg daily oncology dosingregimen is approximately 20 ng/ml. The trough level associated with the0.75-1.5 mg bid transplant dosing regimen is approximately 3 ng/ml. Incontrast, the trough level associated with the dosing regimens used inour immunization study were 3-20 fold lower.

Since RAD001-related AEs are associated with trough levels, the 3 dosingregimens were predicted to have adequate safety for normal volunteers.In addition, the 3 doses were predicted to give a range of mTORinhibition. P70 S6 Kinase (P70 S6K) is a downstream target that isphosphorylated by mTOR. Levels of P70 S6K phosphorylation serve as ameasure of mTOR activity. Based on modeling and simulation of P70 S6Kphosphorylation data obtained in preclinical and clinical studies ofRAD001, 20 mg weekly was predicted to almost fully inhibit mTOR activityfor a full week, whereas 5 mg weekly and 0.5 mg daily were predicted topartially inhibit mTOR activity.

Elderly volunteers >=65 years of age were randomized to one of the 3RAD001 treatment groups (50 subjects per arm) or placebo (20 subjectsper arm). Subjects were treated with study drug for 6 weeks, given a 2week break, and then received influenza (Aggrippal, Novartis) andpneumoccal (Pneumovax 23, Merck), vaccinations. Response to influenzavaccination was assessed by measuring the geometric mean titers (GMTs)by hemagglutination inhibition assay to the 3 influenza strains (H1N1,H3N2 and B influenza subtypes) in the influenza vaccine 4 weeks aftervaccination. The primary endpoints of the study were (1) safety andtolerability and (2) a 1.2 fold increase in influenza titers as comparedto placebo in ⅔ of the influenza vaccine strains 4 weeks aftervaccination. This endpoint was chosen because a 1.2 fold increase ininfluenza titers is associated with a decrease in influenza illness postvaccination, and therefore is clinically relevant. The 5 mg weekly and0.5 mg daily doses were well tolerated and unlike the 20 mg weekly dose,met the GMT primary endpoint (FIG. 1A). Not only did RAD001 improve theresponse to influenza vaccination, it also improved the response topneumococcal vaccination as compared to placebo in elderly volunteers.The pneumococcal vaccine contains antigens from 23 pneumococcalserotypes. Antibody titers to 7 of the serotypes were measured in oursubjects. Antibody titers to 6/7 serotypes were increased in all 3 RADcohorts compared to placebo.

The combined influenza and pneumococcal titer data suggest that partial(less than 80-100%) mTOR inhibition is more effective at reversing theaging-related decline in immune function than more complete mTORinhibition.

Example 3: Low Dose mTOR Inhibition Increases Energy and Exercise

In preclinical models, mTOR inhibition with the rapalog rapamycinincreases spontaneous physical activity in old mice (Wilkinson et al.Rapamycin slows aging in mice. (2012) Aging Cell; 11:675-82). Ofinterest, subjects in the 0.5 mg daily dosing cohort described inExample 2 also reported increased energy and exercise ability ascompared to placebo in questionnaires administered one year after dosing(FIG. 7). These data suggest that partial mTOR inhibition with rapalogsmay have beneficial effects on aging-related morbidity beyond justimmune function.

Example 4: P70 S6 Kinase Inhibition with RAD001

Modeling and simulation were performed to predict daily and weekly doseranges of RAD001 that are predicted to partially inhibit mTOR activity.As noted above, P70 S6K is phosphorylated by mTOR and is the downstreamtarget of mTOR that is most closely linked to aging because knockout ofP70 S6K increases lifespan. Therefore modeling was done of doses ofRAD001 that partially inhibit P70 S6K activity. Weekly dosing in therange of >=0.1 mg and <20 mg are predicted to achieve partial inhibitionof P70 S6K activity (FIGS. 8A and 8B).

For daily dosing, concentrations of RAD001 from 30 pM to 4 nM partiallyinhibited P70 S6K activity in cell lines (Table 7). These serumconcentrations are predicted to be achieved with doses of RAD001>=0.005mg to <1.5 mg daily.

TABLE 7 Percent inhibition of P70 S6K activity in HeLa cells in vitroRAD001 0 6 pM 32 pM 160 pM 800 pM 4 nM 20 nM concentration % P70 S6K 0 018 16 62 90 95 inhibitionConclusion

Methods of treating aging-related morbidity, or generally enhancing animmune response, with doses of mTOR inhibitors that only partiallyinhibit P70 S6K. The efficacy of partial mTOR inhibition with low dosesof RAD001 in aging indications is an unexpected finding. RAD001 doseranges between >=0.1 mg to <20 mg weekly and >=0.005 mg to <1.5 mg dailywill achieve partial mTOR inhibition and therefore are expected to haveefficacy in aging-related morbidity or in the enhancement of the immuneresponse.

EQUIVALENTS

The disclosures of each and every patent, patent application, andpublication cited herein are hereby incorporated herein by reference intheir entirety. While this invention has been disclosed with referenceto specific aspects, it is apparent that other aspects and variations ofthis invention may be devised by others skilled in the art withoutdeparting from the true spirit and scope of the invention. The appendedclaims are intended to be construed to include all such aspects andequivalent variations.

Other embodiments are within the following claims.

What is claimed is:
 1. A method of promoting an immune response in animmunosenescent human subject, comprising administering to theimmunosenescent human subject a low, immune enhancing, dose of about 0.1mg of RAD001, orally and once daily, thereby enhancing or promoting animmune response in the immunosenescent human subject.
 2. The method ofclaim 1, wherein the immunosenescent human subject is immunocompromised.3. The method of claim 1, wherein the immunosenescent human subject hasan infectious disease.
 4. The method of claim 1, wherein theimmunosenescent human subject has an impaired immune response.
 5. Themethod of claim 1, comprising treating the immunosenescent human subjectfor an age related condition.
 6. The method of claim 5, wherein the agerelated condition is selected from the group consisting of sarcopenia,skin atrophy, muscle wasting, brain atrophy, atherosclerosis,arteriosclerosis, pulmonary emphysema, osteoporosis, osteoarthritis,high blood pressure, erectile dysfunction, dementia, Huntington'sdisease, Alzheimer's disease, cataracts, age-related maculardegeneration, prostate cancer, stroke, diminished life expectancy,impaired kidney function, and age-related hearing loss, aging-relatedmobility disability, cognitive decline, memory impairment, tendonstiffness, heart dysfunction, cancer, obesity, and diabetes.
 7. A methodof evaluating an immunosenescent human subject for treatment with a low,immune enhancing, dose of RAD001 to promote or enhance an immuneresponse to an influenza vaccine or antigen, comprising: establishing areference baseline or pre-immunization level of anti-influenza antibody,measuring a baseline or pre-immunization level of anti-influenzaantibody in the immunosenescent human subject, and comparing thebaseline or pre-immunization level of anti-influenza antibody in theimmunosenescent human subject to the reference value, wherein a baselineor pre-immunization level of anti-influenza antibody in theimmunosenescent human subject less than the reference value ispredictive of a greater RAD001 associated increase in antibody titer forthe influenza antigen, and wherein the immunosenescent human subject,once evaluated, is then treated with a low, immune enhancing dose ofRAD001, wherein treatment comprises administering a dose of about 0.1 mgof RAD001, orally and once daily.
 8. A composition comprising (a) avaccine antigen; and (b) about 0.1 mg of RAD001.
 9. The method of claim6, wherein the aging-related mobility disability is frailty.
 10. Themethod of claim 6, wherein the dementia is age-related dementia.
 11. Themethod of claim 6, wherein the heart dysfunction is cardiac hypertrophyor systolic or diastolic dysfunction.